Ocean Health Index

open-source scientific tools and resources

What is the OHI?

The Ocean Health Index ('OHI') is a way 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.

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OHI Flower plot

What is OHI+?

Independent assessments at any scale.

OHI+ assessments use the OHI framework and are independently-led by anyone interested. OHI+ assessments are often conducted at smaller spatial scales with the purpose of informing marine policy.

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Where have assessments been done?

Assessments at the global scale have been completed from 2012-2015. Assessments have also been completed or are underway at smaller scales within coastal countries or groups of countries around the world.

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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

Resources for R and Data Science

We are often asked for the best way to learn R and other Data Science concepts and tools. There are many great resources available but here are some of the free, online resources we have found helpful:

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Colombia's Ocean Indicator Framework

Colombia was one of the first countries to begin an OHI+ assessment: they have been working for 2.5 years. Their work has already yielded positive policy and management changes.

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