Map showing planned operations for the 2021 EM 304 Sea Acceptance Testing and Mapping Shakedown.

2021 EM 304 Sea Acceptance Testing and Mapping Shakedown

The NOAA Office of Ocean Exploration and Research will begin the 2021 operations aboard NOAA Ship Okeanos Explorer with a 25-day expedition, April 16 - May 10, to assess the functionality and ensure readiness of mapping-related equipment, including a new state-of-the-art EM 304 multibeam sonar transducer.

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This entertaining and educational podcast covers a broad range of topics and features a leading line-up of industry experts as guests. This episode features an interview with Dr. Chris German, a marine geoscientist with 30+ years’ experience studying the Earth’s oceans.
SeaState Podcast: Deep Ocean Exploration
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For each month in 2021, we are posting a wallpaper calendar along with historic and OER-relevant exploration highlights from that month from years past.
April Desktop Wallpaper Calendar
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View short videos from past NOAA Office of Ocean Exploration and Research-led expeditions on NOAA Ship Okeanos Explorer that have been featured on our Facebook, Twitter, and Instagram accounts.
Social Media Video Shorts
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About NOAA Ocean Exploration

About OER

Learn about the NOAA Office of Ocean Exploration and Research, the nation's only federal organization dedicated to exploring the global ocean.

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Data and Results

Data & Results

Access diverse scientific data, video, images, documents, and other information associated with office-supported ocean exploration expeditions.

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For Educators

For Educators

Find educational materials and professional development opportunities for educators designed to enhance ocean literacy.

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Featured Expeditions

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Featured Videos

Sampling Around Methane Seeps

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Time-lapse of Processing Mud Samples

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Diving for Details

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Exploring Deepwater Ecosystems with eDNA

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