How to Write a Marine Science Policy Brief
A policy brief is one of the most useful documents an ocean researcher or organisation can produce – and one that is frequently misunderstood.
It is not a short version of a paper. It is not a summary of findings for a scientific audience. It is a document written for a specific decision context, designed to help a decision-maker or their advisor understand a problem, what the evidence shows, and what options exist. The exact format depends on the governance context: a brief for a national ministry, a local council, a regional body, or an international negotiation will differ in tone, length, level of detail, and the kind of action it is meant to support.
Done well, a policy brief can do more to connect ocean science with decisions than a journal article read by hundreds of specialists. Done badly – too long, too technical, or too vague about what the evidence means in practice, it disappears into a pile of unread documents.
Before you write
The most important work in writing a policy brief happens before you open a blank document.
Who is this for? A brief written for a government fisheries agency is different from one written for an international negotiating team, which is different again from one written for a local council mareaching out to journalistsking decisions about coastal management. The more precisely you can identify your audience – their role, their existing knowledge, and their decision-making context – the more useful your brief will be.
What decision does this brief relate to? A policy brief that is not anchored to a specific decision or policy question is much harder to write and much less useful to read. What is being decided? When? By whom? What would change if the decision went one way rather than another?
What do you want the reader to do, think, or understand differently after reading it? That is the purpose of the brief. Everything in the document should serve that purpose.
Structure
A policy brief usually follows a structure that experienced readers recognise and expect. The following is a common and effective format for ocean science policy briefs.
Title. Specific and informative. It should tell the reader what the brief is about and signal why it matters. “Seagrass loss in the North Atlantic: implications for the 2026 fisheries management review” is a title. “New research on seagrass” is not.
Key messages. Three to five bullet points at the top that summarise the most important things the reader needs to know. These should be written so that a reader who goes no further still understands the core argument. Many busy policymakers and advisors will read only this section.
The problem. A short section – one or two paragraphs – that clearly describes the issue the brief addresses. What is the policy challenge? Why does it matter? What is at stake?
The evidence. What does the research show? This section presents the scientific evidence clearly and accessibly, without jargon. It should be honest about uncertainty and about the strength of the evidence base. It should not read like a literature review. It should present the findings that are relevant to the specific policy question.
The options. What could be done? This section presents the policy options the evidence speaks to, with a brief assessment of each. This is where you show what your evidence means for decisions. You are not prescribing an answer, but by laying out what the evidence supports, what the trade-offs are, and what would need to be true for each option to work.
Recommendations. Not all policy briefs include explicit recommendations, and whether to include them depends on your role and the context. If you do include them, they should follow logically from the evidence and be specific enough to be actionable.
Further information. Contact details, links to the underlying research, and any relevant references. Keep this brief. It’s not supposed to be a dense reference section at the end of a peer-review paper.
Writing style
The most common mistake in policy briefs written by researchers is that they read like academic papers in shorter form. They use technical language without explanation. They lead with methods and background rather than findings and implications. They hedge every claim to the point where the reader cannot extract a clear message.
A few principles help:
Lead with the finding, not the background. Decision-makers are busy. The most important thing you have to say should appear in the first paragraph and ideally in the first sentence.
Use plain language. This does not mean simplistic. It means clear. If a non-specialist cannot understand a sentence, rewrite it. Technical terms should be explained the first time they appear, or avoided entirely.
Be specific. Vague claims about policy relevance are as unhelpful in a policy brief as they are in a journal paper. Say what the evidence shows, what it means for a specific decision, and what the options are.
Keep it short, but not artificially so. Two to four pages is a common target for many briefs, but the right length depends on the governance context and the complexity of the decision.
One brief, one message. A policy brief that tries to address multiple policy questions, or that covers an entire research programme, is too diffuse to be useful. Focus on one question, one decision, one message.
Distribution and timing
A well-written policy brief that sits on a website and is never actively shared is not fulfilling its purpose. Think about how it will reach the people who need it.
Direct distribution to relevant advisors, technical staff, and intermediaries is often more effective than broad dissemination. A brief sent directly to the people most likely to use it, with a short personal note explaining why it is relevant to them, will usually have more impact than one posted online and shared passively.
Timing matters too. A good brief sent at the wrong point in the policy cycle may have little effect. In many cases, the best brief is the one that arrives just before a consultation, review, hearing, or decision deadline.
In some cases, it may also be worth reaching out to journalists, especially when building public awareness, widening the audience, or creating broader pressure around an issue are part of the strategy. That route is most useful when public attention is likely to matter for the policy process, but it should be treated as a separate communication pathway rather than a substitute for direct policy engagement.
Final thought
A policy brief is not just a summary of research. It is a tool for connecting evidence to a specific decision in a specific governance context. That means the best briefs are not the ones that say the most. They are the ones that make it easiest for the right person to use the evidence at the right time.
