Re: Hypselodoris bayeri in Curacao

January 18, 2010
From: Terence Zahner


Concerning message #23065:

Hi Bill
Sharp eyes! I have attached the whole series of images I shot. In the first two, there also appears to be some orange sponge growth in the center of the frame. You can see a little of the nudibranch's direction of travel.

I also pointed this out to another photographer I was diving with. He may have gotten a different perspective or a better shot of the surroundings. I'll ask him.

Terence


tzahner@gmail.com

Zahner, T., 2010 (Jan 18) Re: Hypselodoris bayeri in Curacao. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/23117

Dear Terence,

Thanks for your rapid response. I have included two photos above, which are from the last of your sequence of photos and show the nudibranch alongside the sponge siphon. I first thought it looked as though the Hypselodoris was aiming for this sponge siphon but then I noticed that in the first photo in your sequence, when the slug is furthest from the siphon, it is moving past another small colony of the same sponge [see rings in lower photo].

In your close-up, the fibrous skeleton doesn't seem right for the most likely families this animal would eat, so I think it is all just a coincidence.

Your effort is certainly not a waste of time, for these animals don't always do what they are supposed to do. If we start to get more records of it associated with this sponge we may need to change our mind.

Best wishes,
Bill Rudman

Rudman, W.B., 2010 (Jan 18). Comment on Re: Hypselodoris bayeri in Curacao by Terence Zahner. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/23117

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