Atagema spongiosa? from the Philippines

December 21, 2002
From: Erwin Koehler

Dear Bill,
Is the attached photo Atagema spongiosa? It is from the Philippines, Cabilao Island.

Size: 65mm
Depth: 0m (tidepool)
Date: 28 February 2002


Koehler, E., 2002 (Dec 21) Atagema spongiosa? from the Philippines. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Erwin,
Certainly looks like A. spongiosa. One useful thing to do when photographing these very cryptic looking animals, which could be a sponge, or Dendrodoris tuberculosa, etc, etc, is to gently turn them over and take a photo of the underside as well. As long as you turn them back - if they aren't already doing that themselves - it should cause them no harm, and would give me a few more clues
Bill Rudman

Rudman, W.B., 2002 (Dec 21). Comment on Atagema spongiosa? from the Philippines by Erwin Koehler. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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