Ceratosoma amoena mating

July 12, 1999
From: Grey McNeil

Dear Bill,
Could you identify this photo please. The details are:
FLY PT., NELSON BAY, Port Stephens, NSW, eastern Australia, 8m, February 1999, 3cm long.

Thanks,

Grey McNeil.

GREYMACIND@bigpond.com

McNeil, G., 1999 (Jul 12) Ceratosoma amoena mating. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/999

Dear Grey,
These two animals are a mating pair of Ceratosoma amoena, quite common in southern Australia and northern New Zealand. All sea slugs are hermaphrodite, which means they have a fully operational set of male and female reproductive organs. In chromodorids the penis and vagina are situated on the right side of the body behind the head. To mate, the two partners need to have their right sides together, as in your photo. The white 'tube' joining them is their joined reproductive organs.

Bill Rudman.

Rudman, W.B., 1999 (Jul 12). Comment on Ceratosoma amoena mating by Grey McNeil. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/999

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