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sea apple?

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[flickrvideo]6876570018[/flickrvideo]

 

I thought sea apple feeds primarily on plankton but this one feeding fish!

footage taken in Ambon, Indonesia.

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You're half right - sea apples do feed on plankton and half wrong - it's not a sea apple. Those are echinoderms - holothuroids in the genera Paracucumaria and Pseudocolochirus. The critter in your video is a sea anemone in the family Actinodendronidae, possibly Actinostephanus haeckeli. The two images at the bottom are of haeckeli - http://web.nhm.ku.edu/inverts/adorian/actinodendronidae.htm Actinodendronid anemones have really powerful nematocysts and as you saw, are quite capable of catching fish.

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