Droopy Sea Pen
Umbellula lindahli

When threatened, the droopy sea pen bioluminesces with brilliant blue-green spirals along the colony. The spirals start at the base and move up to the tips of the colony in a wave-like motion. The sea pen can also exude bioluminescent slime to defend itself. Height to about 10 inches. Passively feeds on zooplankton and small particles (marine snow) raining down from above or those carried along the bottom by currents.

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What this animal would look like as viewed by the Eye-in-the-Sea camera: