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The majority of life on earth is found under the sea, but most of it remains to be explored. Tropical reefs, deep-sea trenches, seagrass meadows and frozen polar seas are all individually unique and complex environments, but connected within Earth's single, vast ocean. By joining our BSc Marine Biology course you will be immersed in this fascinating ocean world.
At Essex you will begin your journey through diverse marine ecosystems from day one. Our team of internationally renowned academic staff will introduce you to ocean systems and marine ecology through their own research on topics as varied as coral reef conservation, fisheries management, animal behaviour, marine biotechnology and microbiology. These are taught alongside key scientific skills including data analysis and interpretation, literature research and presentation skills to give you a concrete foundation for your scientific career.
You will develop the concepts introduced in lectures through extensive, practical, hands-on experience in the laboratories of our STEM Centre, as well as in the field. Our local estuaries and coastal ecosystems are a natural laboratory on our doorstep. You will investigate the diversity of beautiful Essex salt marshes and interact with key people working to improve our coastline, including Essex Wildlife Trust, the Environment Agency and Colchester Oyster Fisheries. Later in your degree there will be opportunities to travel to field locations in Scotland, Greece and Indonesia (subject to additional costs) to apply what you have learned. During a trip to Indonesia, in the heart of the Coral Triangle, you will learn to dive and participate in unique underwater research surveys and lectures.
After completing core modules, you will move on to more advanced and specialised modules that are driven by our departmental research expertise.
In the final year you will have the opportunity to select an independent research project through which you can further develop your own interests. Previous topics have included studies on oyster fisheries and water quality with local industry, fieldwork on sea turtle ecology in Greece and identifying coral reef conservation strategies in the Caribbean and Indonesia.
During the field trip to Wakatobi Marine National Park in Indonesia, our students are able to participate in underwater lectures.
We’re ranked 54th (14th in UK) for promoting the United Nations Sustainable Development Goal for climate action (Times Higher Education Impact Rankings 2024).
To learn about the initiatives and actions the University of Essex is taking to tackle the climate and biodiversity crises, visit our sustainability page.
Why we're great.
You will join field courses covering our local Marine Conservation Zone, tropical Indonesia and the Mediterranean Sea, studying everything from temperate shores and salt marshes to tropical mangroves and coral reefs.
You will use our fantastic new aquatic biology research aquaria and research laboratories.
We are ranked 1st in the UK for biology (The Mail University Guide 2025) and 7th for biology (non-specific) for overall positivity score (National Student Survey 2024, English broad-discipline higher education institutions).
Study abroad
Your education extends beyond the university campus. We support you in expanding your education through offering the opportunity to spend a year or a term studying abroad at one of our partner universities. The four-year version of our degree allows you to spend the third year abroad or employed on a placement abroad, while otherwise remaining identical to the three-year course.
Studying abroad allows you to experience other cultures and languages, to broaden your degree socially and academically, and to demonstrate to employers that you are mature, adaptable, and organised.
If you spend a full year abroad you'll only pay 15% of your usual tuition fee to Essex for that year. You won't pay any tuition fees to your host university
Placement year
Alternatively, you can spend your third year on a placement year with an external organisation. This is usually focussed around your course, and enables you to learn about a particular sector, company or job role, apply your academic knowledge in a practical working environment, and receive inspiration for future career pathways.
If you complete a placement year you'll only pay 20% of your usual tuition fee to Essex for that year.
Our expert staff
As one of the largest schools in our University we offer a lively, friendly and supportive environment with current, research-led study and high-quality teaching. You will benefit from the wide expertise of our research-active academics and their pioneering work on marine issues of national and global importance.
All of our academic staff conduct their own research and have professional expertise that you will benefit from through your studies. From genes to cells, whole animals and through to communities and ecosystems, our marine biology academics design course materials that make their world-class research accessible and inspiring.
Learning about Earth's largest unexplored habitat, the deep-sea, with Dr Michelle Taylor – the President of the Deep-Sea Biology Society and BSc Marine Biology Course Director.
We are proud that one-third of students at the University of Essex are from outside of the UK. The University has a Women's Network to support female staff and students, and the School of Life Sciences has been awarded the Athena Swan Silver Award (2020) reflecting the work carried out by staff in our School to improve equality. Measures include a mentorship scheme, support for postdoctoral research staff and financial help towards childcare costs for academics who wish to attend conferences.
Specialist facilities
Our School of Life Sciences has received major investment over recent years to fund new teaching laboratories in our STEM Centre and new research aquaria for studies of tropical, temperate, marine and freshwater systems.
You will work in an open and friendly department, with shared staff-student social spaces and during your final-year research project you will work alongside academics and PhD students in shared laboratories. You may choose to use our state-of-the-art research facilities, including everything from environmentally controlled systems for ecological experiments and molecular biology laboratories, to behavioural analysis systems and our advanced bioimaging facility. There are drones available for remote sensing surveys, an advanced bioimaging suite, and the latest Oxford Nanopore portable genome sequencers, all within the School. Through our global networks we have created national and international field courses in Plymouth, Millport, Greece, and Indonesia to teach you the latest field techniques.
Your future
As the world's environmental problems worsen, the demand for qualified marine biologists and ecologists continues to grow.
Your degree in marine biology will open up wide-ranging career opportunities, including further study, careers in conservation, science writing and editing, as well as commercial research or consultancy for governmental or non-governmental organisations.
Our past students have taken up work in research laboratories, consultancies, business and industry, conservation practice and environmental assessment. Some have gone on to work in the commercial sector, while others still have chosen to enhance their career opportunities by studying for MSc or PhD degrees.
Recent graduates now work for the following high-profile organisations:
Marine Biology Research Manager at Hive Ventures
Process Scientist at Thames Water
New Earth Solutions
Engine Group
Cromwell Council
DEFRA
Operation Wallacea
BBC
We also work with our University's Student Development Team to help you find out about further work experience, internships, placements, and voluntary opportunities.
"After graduating from Essex I was appointed as a research supervisor at the Archipelagos Insitute of Marine Conservation in Greece. Through researching the marine ecosystems of the Mediterranean Sea, I was exposed to a very different environment to the estuaries and salt marshes of Essex! From shallow coastal seagrass meadows to deep-sea coralligenous habitats, and the vast diversity of fish and invertebrates they host. My journey into environmental research progressed when I was offered a research Masters back at Essex. In collaboration with Project Seagrass, I will be focusing on seagrass restoration and recovery in the southern North Sea, hoping to further this important research and potentially contribute towards climate change initiatives."
Alice Malcolm-McKay, BSc Marine Biology, 2020
Entry requirements
UK entry requirements
GCSE: Mathematics C/4.
A-levels: BBB - BBC or 120 - 112 UCAS tariff points from a minimum of 2 full A-levels, including B in Biology, Environmental Science, Life and Health Sciences or Marine Science.
BTEC: DDM - DMM or 120 - 112 UCAS tariff points from a minimum of the equivalent of 2 full A-levels. The acceptability of BTECs is dependent on subject studied and optional units taken - email ugquery@essex.ac.uk for advice.
Combined qualifications on the UCAS tariff: 120 - 112 UCAS tariff points from a minimum of 2 full A levels or equivalent. Tariff point offers may be made if you are taking a qualification, or mixture of qualifications, from the list on our undergraduate application information page.
IB: 30 - 29 points or three Higher Level certificates with 555-554.
IB Career-related Programme: We consider combinations of IB Diploma Programme courses with BTECs or other qualifications. Advice on acceptability can be provided, email Undergraduate Admissions.
QAA-approved Access to HE Diploma: 6 level 3 credits at Distinction and 39 level 3 credits at Merit, depending on subject studied - advice on acceptability can be provided, email Undergraduate Admissions.
T-levels: We consider T-levels on a case-by-case basis, depending on subject studied. The offer for most courses is Distinction overall. Depending on the course applied for there may be additional requirements, which may include a specific grade in the Core.
Contextual Offers:
We are committed to ensuring that all students with the merit and potential to benefit from an Essex education are supported to do so. If you are a home fee paying student residing in the UK you may be eligible for a Contextual Offer of up to two A-level grades, or equivalent, below our standard conditional offer. Factors we consider:
Applicants from underrepresented groups
Applicants progressing from University of Essex Schools Membership schools/colleges
Applicants who attend a compulsory admissions interview
Applicants who attend an Offer Holder Day at our Colchester or Southend campus
For further information about what a contextual offer may look like for your specific qualification profile, email ugquery@essex.ac.uk.
If you haven't got the grades you hoped for, have a non-traditional academic background, are a mature student, or have any questions about eligibility for your course, more information can be found on our undergraduate application information page or get in touch with our Undergraduate Admissions Team.
International & EU entry requirements
We accept a wide range of qualifications from applicants studying in the EU and other countries. Get in touch with any questions you may have about the qualifications we accept. Remember to tell us about the qualifications you have already completed or are currently taking.
Sorry, the entry requirements for the country that you have selected are not available here. Please contact our Undergraduate Admissions team at ugquery@essex.ac.uk to request the entry requirements for this country.
English language requirements
English language requirements for applicants whose first language is not English: IELTS 6.0 overall, or specified score in another equivalent test that we accept.
Details of English language requirements, including component scores, and the tests we accept for applicants who require a Student visa (excluding Nationals of Majority English Speaking Countries) can be found here
If we accept the English component of an international qualification it will be included in the academic levels listed above for the relevant countries.
English language shelf-life
Most English language qualifications have a validity period of 5 years. The validity period of Pearson Test of English, TOEFL and CBSE or CISCE English is 2 years.
If you require a Student visa to study in the UK please see our immigration webpages for the latest Home Office guidance on English language qualifications.
Pre-sessional English courses
If you do not meet our IELTS requirements then you may be able to complete a pre-sessional English pathway that enables you to start your course without retaking IELTS.
Pending English language qualifications
You don’t need to achieve the required level before making your application, but it will be one of the conditions of your offer.
If you cannot find the qualification that you have achieved or are pending, then please email ugquery@essex.ac.uk
.
Requirements for second and final year entry
Different requirements apply for second and final year entry, and specified component grades are also required for applicants who require a visa to study in the UK. Details of English language requirements, including UK Visas and Immigration minimum component scores, and the tests we accept for applicants who require a Student visa (excluding Nationals of Majority English Speaking Countries) can be found here
Additional Notes
If you’re an international student, but do not meet the English language or academic requirements for direct admission to this degree, you could prepare and gain entry through a pathway course. Find out more about opportunities available to you at the University of Essex International College
Structure
Course structure
Our research-led teaching is continually evolving to address the latest challenges and breakthroughs in the field. The following modules are based on the current course structure and may change in response to new curriculum developments and innovation.
We understand that deciding where and what to study is a very important decision for you. We'll make all reasonable efforts to provide you with the courses, services and facilities as described on our website and in line with your contract with us. However, if we need to make material changes, for example due to significant disruption, we'll let our applicants and students know as soon as possible.
Components and modules explained
Components
Components are the blocks of study that make up your course. A component may have a set module which you must study, or a number of modules from which you can choose.
Each component has a status and carries a certain number of credits towards your qualification.
Status
What this means
Core
You must take the set module for this component and you must pass. No failure can be permitted.
Core with Options
You can choose which module to study from the available options for this component but you must pass. No failure can be permitted.
Compulsory
You must take the set module for this component. There may be limited opportunities to continue on the course/be eligible for the qualification if you fail.
Compulsory with Options
You can choose which module to study from the available options for this component. There may be limited opportunities to continue on the course/be eligible for the qualification if you fail.
Optional
You can choose which module to study from the available options for this component. There may be limited opportunities to continue on the course/be eligible for the qualification if you fail.
The modules that are available for you to choose for each component will depend on several factors, including which modules you have chosen for other components, which modules you have completed in previous years of your course, and which term the module is taught in.
Modules
Modules are the individual units of study for your course. Each module has its own set of learning outcomes and assessment criteria and also carries a certain number of credits.
In most cases you will study one module per component, but in some cases you may need to study more than one module. For example, a 30-credit component may comprise of either one 30-credit module, or two 15-credit modules, depending on the options available.
Modules may be taught at different times of the year and by a different department or school to the one your course is primarily based in. You can find this information from the module code. For example, the module code HR100-4-FY means:
HR
100
4
FY
The department or school the module will be taught by.
In this example, the module would be taught by the Department of History.
Develop your skillset and boost your CV. This module prepares you for the coursework, laboratory practicals and research projects that you will encounter during undergraduate study. Get to know referencing systems and learn how to effectively communicate scientific information. Use scientific units and simple algebra and demonstrate understanding of logarithms, exponentials, geometry and elementary calculus. Learn how to design experiments, handle data and display, interpret and analyse basic statistics.
Teaching and learning will be through a mixture of lectures, classes, practicals and tutorials, with an emphasis on developing the key transferable skills needed for a career in biosciences.
Develop practical field skills that are critical for any practicing Marine Biologist. Spending one week at the Marine Biological Association of the UK in Plymouth, you gain key knowledge of marine invertebrate and algal identification, classification and distribution, developing skills in experimental design, field data-collection and data analysis. Please note that students make their own travel arrangements for this modules.
As part of this module you will be required to attend a field trip to Plymouth to the Marine Biological Association of the UK (MBA) where you will develop your field research skills in Biology. The cost for this trip is approximately £50, which you will need to pay.
This module has been designed to enable students to integrate their subject knowledge with an understanding of sustainable development, acquiring the skills and competencies essential for addressing the urgent sustainability challenges of the 21st century.
Why do we all look different? Are some illnesses hereditary? Are animals born ready-suited to their environment? From the early theories of Mendel to modern studies in molecular genetics, you explore how scientists have answered these questions over the last 150 years.
Examine how the structure and function of DNA allows genetic material to be expressed, replicated and inherited, and consider how genetic variation leads to adaptive evolution. From developing new technologies in gene cloning to the applications for modern medicine, you explore how geneticists are building on the earlier achievements in this fundamentally important field to enhance our understanding of life on earth.
Microbes are essential for life, and they connect the health of humans, other animals and ecosystems. They help us digest our food, provide us with vitamins and are contribute to our health and wellbeing. Marine microbes provide about one-third of the oxygen we breath. And, by cleaning up pollutants and synthesising valuable products such as antibiotics, microbes are essential for the delivery of the United Nation’s Sustainable Development Goals. On the other hand, some microbes cause devastating diseases. Despite major advances in treatment and prevention, incidences of infectious disease continue to rise. You will learn about the vast diversity and evolution of these mostly beneficial microbes and learn about the pathogenicity of the harmful ones. You will examine how different viruses and bacteria invade, interact and replicate within their hosts. A series of four practical sessions in our new teaching laboratory will give you hands-on experience of growing, observing, purifying, counting and even killing microbes. This will provide you with sought-after skills, such as aseptic technique, serial dilution and data analysis.
The diversity of life on planet Earth is breath taking. We share our home with a vast number of species, a large portion of which are animals. We will discover the diversity of animal forms and functions and the role of natural selection in determining individual behaviour such as foraging, breeding and predator escape. You also investigate the idea that nothing in ecology and evolution makes sense in isolation.
This module has been designed to enable students to integrate their subject knowledge with an understanding of sustainable development, acquiring the skills and competencies essential for addressing the urgent sustainability challenges of the 21st century.
The marine realm covers 70% of the Earth's surface. It contains ice-covered seas and hydrothermal vents, muddy estuaries, deep ocean trenches and the clear blue open sea. The oceans and seas are also integral to the whole earth-ocean-atmosphere system, which controls the climate and conditions for life on Earth. Discover the different marine environments, the organisms that inhabit them and their ecological interactions. You also investigate the physical and chemical conditions that determine the diversity of marine life and consider how human activity is influencing marine ecosystems, through overfishing, pollution, and climate change.
This module has been designed to enable students to integrate their subject knowledge with an understanding of sustainable development, acquiring the skills and competencies essential for addressing the urgent sustainability challenges of the 21st century.
You will develop your transferable skills in scientific writing (including referencing and avoiding plagiarism), teamwork and communication through oral presentations, study and research skills (including essay writing, lecture note taking, use of library and databases). Teaching and learning will be through a mixture of lectures, classes, and tutorials. The emphasis will be on small group, tutorial-style teaching and interaction with other students on this module, with assessments tailored to your degree subject area.
Our oceans cover 71% of the Earth’s surface and contain 97% of the planets water. This vast underwater world supports a huge diversity of living organisms – get to know them. You learn how to assess biodiversity, measure species distribution and regulate populations. Systems of particular focus include biodiversity hot-spots such as coral reefs and rocky shores. You also have chance to practically apply your skills, examining the biodiversity of muddy and sandy shores, and investigating the morphological and genetic diversity in marine amphipods.
This module has been designed to enable students to integrate their subject knowledge with an understanding of sustainable development, acquiring the skills and competencies essential for addressing the urgent sustainability challenges of the 21st century.
Professional skills for Ecological and Marine Scientists
(15 CREDITS)
In this career-focused module you develop skills specific to your discipline, such as information retrieval, data-analysis and interpretation techniques, as well as a broader range of transferable skills, such as communication, team-work, numeracy and attention to detail. Learn how to best approach job applications, including CV and cover letter writing, aptitude testing and the interview process.
The importance of marine vertebrates to our aquatic systems cannot be underestimated, yet some of our most iconic underwater species are under serious threat. This module focuses on the taxonomy, physiology, ecology and conservation of the top predators and keystone species, including (but not limited to), whales, dolphins, sharks, rays, manatees, marine turtles and sea snakes.
Estuarine and Coastal Ecology Field Module (Assessed in Following Year)
(0 CREDITS)
This module concentrates on the relationship between biological diversity, and aspects of water chemistry and habitat structure in different coastal environments situated along an estuarine gradient. We will be using the Colne / Blackwater estuary complex as our field site.
This module aims to prepare you for carrying out an individual scientific investigation on a topic relating to your degree. Develop skills to identify a suitable question and then design an experimental approach to obtain data addressing this question. The assessment focuses on your analysis and presentation of these data in a suitable scientific paper format report, on the research, understanding and critical writing about the scientific literature relating to your project. Your oral project presentation skills and response to questions, the planning and management of your project work, your progress reflection and your employability skills will also be evaluated.
This module has been designed to enable students to integrate their subject knowledge with an understanding of sustainable development, acquiring the skills and competencies essential for addressing the urgent sustainability challenges of the 21st century.
Investigate the relationship between water chemistry and habitat structure, and biological diversity of coastal environments. Getting hands-on in the local Colne/Blackwater estuary you gain experience in assessing environmental variables, sampling protocols and general fieldwork skills. You learn to identify a wide variety of animals and plants at different salinities, as well as associated habitats such as freshwater grazing marshes and salt marshes. You are also trained in commonly used lab techniques, such as measuring phosphate concentrations and sediment properties.
This module has been designed to enable students to integrate their subject knowledge with an understanding of sustainable development, acquiring the skills and competencies essential for addressing the urgent sustainability challenges of the 21st century.
Fisheries provide food and employment to millions of people across the globe. Get to know the social and economic drivers of fishing and explore the subsequent impact on marine ecosystems. You gain an understanding of the scale and significance of fisheries and learn to critically analyse the methods used to assess their efficacy.
This module has been designed to enable students to integrate their subject knowledge with an understanding of sustainable development, acquiring the skills and competencies essential for addressing the urgent sustainability challenges of the 21st century.
On a placement year you gain relevant work experience within an external business or organisation, giving you a competitive edge in the graduate job market and providing you with key contacts within the industry. The rest of your course remains identical to the three-year degree.
Year abroad
On your year abroad, you have the opportunity to experience other cultures and languages, to broaden your degree socially and academically, and to demonstrate to employers that you are mature, adaptable, and organised. The rest of your course remains identical to the three-year degree.
Teaching
Learn through a combination of lectures, laboratory sessions and coursework
Undergraduate students in the School of Life Sciences typically attend two or three hours of lectures per week per module, plus two or three laboratory practices per module
Gain experience collating and interpreting data, and reporting findings clearly and concisely
Benefit from teaching at our local marine biology field centre
Assessment
Degrees are awarded on the results of your written examinations together with continual assessments of your practical work and coursework
Conduct a research project into marine biology in your final year of study
Fees and funding
Home/UK fee
£9,250 per year
International fee
£23,200 per year
Fees will increase for each academic year of study.
Our events are a great way to find out more about studying at Essex. We run a number of Open Days throughout the year which enable you to discover what our campus has to offer.
You have the chance to:
tour our campus and accommodation
find out answers to your questions about our courses, student finance, graduate employability, student support and more
meet our students and staff
Check out our Visit Us pages to find out more information about booking onto one of our events. And if the dates aren’t suitable for you, feel free to book a campus tour here.
Our UK students, and some of our EU and international students, who are still at school or college, can apply through their school. Your school will be able to check and then submit your completed application to UCAS. Our other international applicants (EU or worldwide) or independent applicants in the UK can also apply online through UCAS Apply.
The UCAS code for our University of Essex is ESSEX E70. The individual campus codes for our Loughton and Southend Campuses are 'L' and 'S' respectively.
You can find further information on how to apply, including information on transferring from another university, applying if you are not currently at a school or college, and applying for readmission on our How to apply and entry requirements page.
Offer Holder Days
If you receive an undergraduate offer to study with us in October 2025 and live in the UK, you will receive an email invitation to book onto one of our Offer Holder Days. Our Colchester Campus Offer Holder Days run from February to May 2025 on various Wednesdays and Saturdays, and our Southend Campus events run in April and May. These events provide the opportunity to meet your department, tour our campus and accommodation, and chat to current students. To support your attendance, we are offering a travel bursary, allowing you to claim up to £150 as reimbursement for travel expenses. For further information about Offer Holder Days, including terms and conditions and eligibility criteria for our travel bursary, please visit our webpage.
If you are an overseas offer-holder, you will be invited to attend one of our virtual events. However, you are more than welcome to join us at one of our in-person Offer Holder Days if you are able to - we will let you know in your invite email how you can do this.
Visit Colchester Campus
Set within 200 acres of award-winning parkland - Wivenhoe Park and located two miles from the historic city centre of Colchester – England's oldest recorded development. Our Colchester Campus is also easily reached from London and Stansted Airport in under one hour.
If you live too far away to come to Essex (or have a busy lifestyle), no problem. Our 360 degree virtual tours allows you to explore our University from the comfort of your home. Check out our Colchester virtual tour and Southend virtual tour to see accommodation options, facilities and social spaces.
At Essex we pride ourselves on being a welcoming and inclusive student community. We offer a wide range of support to individuals and groups of student members who may have specific requirements, interests or responsibilities.
The University makes every effort to ensure that this information on its programme specification is accurate and up-to-date. Exceptionally it can be necessary to make changes, for example to courses, facilities or fees. Examples of such reasons might include, but are not limited to: strikes, other industrial action, staff illness, severe weather, fire, civil commotion, riot, invasion, terrorist attack or threat of terrorist attack (whether declared or not), natural disaster, restrictions imposed by government or public authorities, epidemic or pandemic disease, failure of public utilities or transport systems or the withdrawal/reduction of funding. Changes to courses may for example consist of variations to the content and method of delivery of programmes, courses and other services, to discontinue programmes, courses and other services and to merge or combine programmes or courses. The University will endeavour to keep such changes to a minimum, and will also keep students informed appropriately by updating our programme specifications. The University would inform and engage with you if your course was to be discontinued, and would provide you with options, where appropriate, in line with our Compensation and Refund Policy.
The full Procedures, Rules and Regulations of the University governing how it operates are set out in the Charter, Statutes and
Ordinances and in the University Regulations, Policy and Procedures.
