Chromodoris hamiltoni feeding on black sponge? [1]

September 10, 2008
From: Colin Ogden


Hi Bill
Here are the third set of photos showing extreme interest, maybe feeding on a black sponge

Locality: Sodwana Bay, 15 metres, South Africa, Indian, 2008, reef. Length: 25 to 30 mm. Photographer: Colin Ogden.

Regards
Colin

scubaco@iafrica.com

Ogden C. M., 2008 (Sep 10) Chromodoris hamiltoni feeding on black sponge? [1]. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21877

Dear Colin,

Yes I think we can say that these animals are more than just 'passing by', especially if we also consider Sylvain Le Bris's photo [#21555] showing an almost identical black 'siphon'. As I say in his message this is almost certainly a thorectid sponge perhaps Semitaspongia or Petrosaspongia. As we often find with this sponge, most of the colony is often covered in sand and debris. 

[For my general comments on Colin's series of sponge-feeding observations see the first message #21875].

Best wishes,
Bill Rudman

Rudman, W.B., 2008 (Sep 10). Comment on Chromodoris hamiltoni feeding on black sponge? [1] by Colin Ogden. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21877

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