People depend on healthy oceans. Among the many benefits they provide us are food, livelihoods, protection from natural disasters, recreational opportunities, and spiritual connection.
But how healthy are our oceans? The Ocean Health Index is a tool to measure exactly that.
A collaborative initiative of NCEAS and Conservation International, the Ocean Health Index (OHI) is a comprehensive framework for evaluating the conditions of many things people value about oceans. By synthesizing data into concrete scores, the framework equips managers and policymakers with meaningful “vital signs” that can help them manage oceans sustainably.
The framework can be applied at global, regional, and national scales, enabling tailored assessments with relevant results.
Since 2012, our scientists have done annual global assessments to develop a health record for the world’s oceans. We also support independent groups in conducting their own regional assessments by providing consultation, training, and tools through OHI+.
Explore the Ocean Health Index
Learn more about the framework and how it can inform ocean management.
Conduct a regional assessment
Access resources for conducting an independent ocean health assessment.
Download the Ocean Health Index infographic.
What we measure
The Ocean Health Index measures the conditions of a suite of benefits, or goals, that support human well-being and sustainable marine ecosystems. Learn more.
This year’s global Ocean Health Index score
See how our oceans collectively scored in 2017. Learn more.
The best available science
The Ocean Health Index is designed to inform ocean management using the best available data, methods, and analytical tools. Our scientists accomplish this by following best practices in open science and data science, including making their data freely available.
Additionally, OHI scientists help foster the movement toward open science and build capacity in data science by training ocean scientists in associated methods and tools and providing resources on best practices.
Learn more about how this approach has helped them to do better science in less time.