Among the most sighted organisms during the field season’s remotely operated vehicle dives are sea cucumbers, also known as holothurians. A class containing over 250 species, sea cucumbers are highly diverse, and may appear spiky and brightly colored, or smooth and translucent.
The Nautilus Live video below , and this video by the NOAA Ship Okeanos Explorer team showcase the extraordinary diversity of sea cucumbers encountered in Windward Passage, and the Marianas, respectfully.
Featured image: Sea cucumber off the coast of Puerto Rico, 15 October, 2013. Image courtesy of the Ocean Exploration Trust.