Sustained data for a changing ocean

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What is OOI?

The Ocean Observatories Initiative (OOI) is a science-driven ocean observing network that delivers real-time data from more than 800 instruments to address critical science questions regarding the world’s oceans. 

Funded by the National Science Foundation to encourage scientific investigation, OOI data are freely available online to anyone with an Internet connection. 

Global Station Papa Array Regional Cabled Array Coastal Endurance Array Global Southern Ocean Array Global Irminger Sea Array Coastal Pioneer Array Global Argentine Basin Array

The OOI has three major observatory elements linked together by instrument, infrastructure, and an information management system.

  • Global Ocean Arrays
  • Regional Cabled Arrays
  • Coastal Arrays

Learn more

Image of the week

After waiting out a late-season nor’easter during the in-port period between legs, the second leg of Pioneer began on Tuesday morning April 20 at sunrise. The R/V Neil Armstrong left the dock at Woods Hole as the sun peeked through the sky for another nine days at sea. While the sun was rising, the air still cool and breezy. You can follow the progress of Pioneer 18 here.


Credit: Dee Emrich©WHOI

OOI brings data to your doorstep, without ever having to go to sea. Opportunities exist to customize OOI data by adding instruments or platforms to the existing infrastructure, proposing additional or modified sampling, participating in cruises, borrowing OOI equipment, or simply exploring real-time data to answer scientific questions.  Explore the ways you can participate in the OOI.

Sustained data for a changing ocean