February 24, 2004
From: Mabel Fang
I found this gelatinous-looking slug on a muck dive in Puerto Galera, Philippines. It seems to be secreting some threads from its 'twin peaks'.
Could you please help us identify and explain this behaviour?
Depth: 30 feet
Temp: 23 degree celsius
Date: 23 Jan 2004
email@example.comFang, M., 2004 (Feb 24) A benthic ctenophore from the Philippines. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/12274
This is 'slug' is not a mollusc. It is a very strange member of the phylum Ctenophora. The most common members of this phylum are small planktonic animals called Comb Jellies which have a pair of long branches tentacles for catching their prey. The platyctene ctenophores are a small group which no longer swim, and are flattened to look much like a slug or flat worm. Some live directly on the sea floor while others live on plants or sessile animals. They can be recognised buy the pair of branched tentacles which usually have a pointed sac in which they can retract - your 'twin peaks'.
Your animal is probably a species of Coeloplana. Although not a real sea-slug, these are very interesting animals. They are seldom photographed and usually misidentified as strange flat worms.
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