This is a slime star; if you look closely through the mucus layer, you can see a shape that may look more familiar.
Slime Star
Image courtesy of the NOAA Office of Ocean Exploration and Research, Exploring Puerto Rico’s Seamounts, Trenches, and Troughs. Download larger version (jpg, 1.7 MB).

This is a slime star; if you look closely through the mucus layer, you can see a shape that may look more familiar.

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