How to Access Data

An Ocean of Data

OOI data are available for download in many ways to everyone with Internet access.  A new tool, Data Explorer, allows users to explore, use, and visualize OOI data in innovative and expanded ways. During 2021, data are being migrated from the Data Portal, which contains data from each of OOI’s seven arrays, to Data Explorer.  By the end of the year, Data Explorer will be the gateway to all OOI data.

Ways to access OOI data include:

Data Explorer

The Data Explorer is an exceptional tool to search across data points, download full datasets using ERDDAP, compare datasets across regions and disciplines, and generate shareable custom data views.

Data Portal

The Data Portal provides access to nearly all the data from the cabled and uncabled arrays, which are collected in real-time and telemetered back to shore.

Analytical Data Archive

An Analytical Data Archive is a repository for processed analytical data and metadata for fluid and particulate samples collected by the Regional Cabled Array instruments.

Axial Seamount Live Video

Every three hours live video from Axial Seamount, an actively venting hydrothermal chimney, streams during the hours of 2:00, 5:00, 8:00, and 11:00 EDT & PDT day and night, for a duration of 14 minutes.


High Definition video footage from the Axial Seamount for investigations of this actively venting hydrothermal  is archived here.

Cruise Data

CTD casts and water samples are collected during regular operation and maintenance cruises to service each of the five arrays. These Cruise Data are available for analysis and integration into research and teaching materials.


The ERDDAP (National Ocean and Atmospheric Administration’s Environmental Research Division’s Data Access Program) Server provides access to downloadable subsets of OOI datasets in common file formats, such as Python, R, Javascript, and MATLAB, with the capability of creating graphs and maps.

Machine-to-Machine (M2M)

Access to OOI data is also available through a Machine-to-Machine (M2M) interface, which allows users to request data to meet their needs, from small amounts of data, to multiple data streams or data from multiple platforms, and to set up recurring downloads to update an existing dataset.

PI-Added Instruments

Data from instruments added by Principal Investigators to the OOI arrays can be accessed via the PI-Added Instruments page.

Raw Data Archive

The Raw Data Archive provides access to raw datasets as they are received from the instruments.

Data Tutorial

If you aren’t certain where to begin, have a look at the OOI Data Tutorial that gives step-by-step directions on how to use the portal to access OOI data. If you still have questions after watching, the HelpDesk is always available to users and potential users. We are committed to helping you find and use the data you need.