Chelidonura hirundinina in the Caribbean

October 18, 2001
From: Anne DuPont

Hi Bill,
Recently I was diving in the Florida Keys (islands at the very tip of the eastern US) and two of my photographic buddies came up talking about a slug they saw with a square head and forked tail.

My dive buddies were Susan Mears, a still photographer [] and her husband Jim Mears who got video of the slug (Chelidonura hirundinina) with a black flatworm! Susan got an excellent photograph of the little guy which I have asked her to let me send to you after reading your page on Chelidonura hirundinina and saw that you were requesting pictures of the Caribbean form.

The date of Susan Mear's photo was September 8, 2001, and the location was in the Florida Keys, Florida, USA. The depth was 35 feet. We were diving a sandy area surounded by small patch reefs.

Best regards,
Anne DuPont

DuPont, A., 2001 (Oct 18) Chelidonura hirundinina in the Caribbean. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Anne & Susan,
It's nice to see photos of these species which apparently have a circumtropical distribution in the Indian, Pacific and Atlantic Oceans. It suggests that despite millions of years of separation they still appear to look the same.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Oct 18). Comment on Chelidonura hirundinina in the Caribbean by Anne DuPont. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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