Dendronotus iris eggs?

July 7, 2007
From: Jackie Hildering & Glen Miller

I am fairly certain that these are the egg masses of Dendronotus iris since this animal being prolific at this site and that one would expect them to spawn at base of their favourite snack, the tube dwelling anemone (Pachycerianthus fimbriatus).

Locality: Bear Cove - Port Hardy, 40', British Columbia, Canada, Pacific Ocean, 9 April 2007, Silt bottom. Length: 30 cm. Photographer: Jackie Hildering .

Jackie Hildering and Glen Miller

Hildering, J. & Miller, G., 2007 (Jul 7) Dendronotus iris eggs?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Jackie and Glen,

You are absolutely correct. I have also thought it most interesting that the nudibranch often lays it eggs here. Of course many species lay their eggs on the food. Probably because they spend so much time there. In this case we are talking about a fast moving predator that forages widely over the sand bottom in search of anemones with tentacles extended. They then attack violently.

My question would be - did the slug lay them while waiting for the anemone to come out so it could pounce on it, or did the slug lay the eggs after an unsuccessful attack? We may never know.

Thanks for sharing,
Dave Behrens

Behrens, D.W., 2007 (Jul 7). Comment on Dendronotus iris eggs? by Jackie Hildering & Glen Miller. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Dendronotus iris

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