Crosslandia viridis from Heron Island

April 20, 2001
From: Julie Marshall

Dear Bill,
On my most recent visit to Heron Island [Great Barrier Reef] I found this tiny (5 mm) Crosslandia viridis on the dark green algae, Codium spongiosum, which made it very obvious despite its small size. The photo shows the rhinophores emerging from the long pocket-like extensions on the head and the transparent gills showing as white dots on the insides of the parapodia (or wings). It was found on 7 March 2001 at low tide at the reef crest on the northern side of the island.

Best wishes,
Julie Marshall

j.marshall@latrobe.edu.au

Marshall, J., 2001 (Apr 20) Crosslandia viridis from Heron Island. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4176

Dear Julie,
There aren't many records of Crosslandia from anywhere in the Indo-West Pacific so this is a very interesting find. I think there are probably as many records on the Forum as there are in the published literature. I had always assumed that it was a green animal but it seems it is either quite variable in colour or there is more than one species.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Apr 20). Comment on Crosslandia viridis from Heron Island by Julie Marshall. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4176

Factsheet

Crosslandia viridis

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