Ocean Health Index

open data science tools and resources

for marine science and management

What is the Ocean Health Index?

The Ocean Health Index ('OHI') is a scientific framework used to measure how healthy oceans are. Understanding the state of our oceans is a first step towards ensuring they can continue providing humans benefits now and in the future.

Learn more Download data Visit our overview website oceanhealthindex.org
OHI Flower plot

Where have OHI assessments been done?

We've led global OHI assessments of 220 coastal nations and territories every year since 2012, and also lead OHI assessments at smaller scales.

Additionally, we share code and provide training and support for independent groups interested in leading their own OHI assessments. These are called independent OHI assessments, or 'OHI+ assessments'.

Learn more about OHI+ View all assessments View publications
OHI hex sticker

Open data science for marine science and management

The OHI is transforming the way marine science streamlines with coastal management by leveraging practices and tools from open science and data science. We work openly online and have shared our story in publications and blogs. We teach these practices and tools to groups leading OHI+ assessments.

Better science in less time

How do I get started?

We provide free instruction and software so you can conduct your own OHI+ assessment. There are four phases to the assessment process: Learn, Plan, Conduct, and Inform.

Start your OHI+ assessment now

News

Open data science for marine management

The single biggest motivation of the Ocean Health Index project is to use science to inform marine management. And not just any science, the best available science, data, methods, and tools. Open data science is helping us get there, with transparency, reproducibility, collaboration, and communication at its core.

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Examples of OHI and management

The Ocean Health Index (OHI) has been changing conversations about ocean management. The OHI framework helps focus the discussions about benefits that the ocean provides to people in a particular area; it helps keep management targets in mind when considering which information could be included in an OHI assessment.

Read More...
Older posts View all OHI Science news