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sea slug thread! Anonymous
pic is Glaucus atlanticus

thread purpose: i once saw this crazy fucking sea slug with disc shaped, transparent, detachable fins of some sort filled with crazy tree-like vein structures. Requesting name/pics/something equally crazy
>> Anonymous
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just google for nudibranch.

example:
http://www.sergeyphoto.com/underwater/nudibranchs.html

The tentacles are filled with Cnidocytes (Iä ftaghn) that were "robbed" from coral polyps.
They are a defense mechanism.