A photograph shows the Global Foundation for Ocean Exploration's remotely operated vehicle (ROV) on the deck of a ship. Mounted on the side of the white and black ROV are two gray, cylindrical Niskin bottles used for water sampling, which are highlighted by a yellow box. In the background, there is the ocean and a coastline.
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Niskin Bottles

Niskin bottles on the Global Foundation for Ocean Exploration remotely operated vehicle Yogi.

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Credit

Image courtesy of the Surveying Deep-sea Corals, Sponges, and Fish Habitat Off the U.S. West Coast expedition.