This smooth surfaced sea squirt is small, growing no larger than 1.5 in (3.8 cm). It's skin is semitransparent so that you can see the organs inside. Tunicates take water into their bodies through their siphons (one of which is pointing downwards here) so they can filter out the plankton that they feed upon.
Sea Grape
(Mogula manhattensis or citrina)
 

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