Acteon tornatilis

Erling Svensen This pictures from sandy bottom, 12 meter. A lots of these eggs. Any body that knows who made them? The eggs only 2 cm long.

Marco Faasse Possibly Acteon tornatilis ... ?

Erling Svensen Do any of you know these eggs? From 10 meters deep, muddy bottom in May this year.

João Pedro Silva They look similar to Armina's I've seen.

Erling Svensen Thanks both of you

CplBhavik Patel Hemmenuia sp., I think. We have similar kind from Gulf of Kachchh (Gujarat,INDIA)

Bernard Picton Were there any sea pens in the area?

CplBhavik Patel Yep

David Kipling This looks to be eggs within a single case, as opposed to a thread-like spiral of that thing we saw in Scotland Bernard that you think could be Armina loveni.

Marco Faasse Also consider Acteon ...

George Brown I've found what I think are Armina eggs. The "enclosure", containing the eggs, was anchored at each end.

Erling Svensen A lot of sea pens, Bernard Picton

Bernard Picton The other species with eggs a bit like this is Okenia leachii. I've only seen them once, and I think they were only anchored at one end. I also think they were bigger than this. Were there any seasquirts buried in the sand, Erling?

Erling Svensen I did not sea any seasquirts, Bernard. Do we have Okenia leachii in Norway?

Franki Perry Hiya Erling, I think that the egg case could be Acteon tornatilis. If you have a look at the pdf there are some more details of the eggs produce by this species. http://sabella.mba.ac.uk/1621/01/Observations_on_the_opisthobranch_mollusc_Acteon_tornatilis_(L.).pdf

Franki Perry Was the egg case anchored into the sediment? It looks as though it is on the left hand side of the case?

Erling Svensen The eggs weere anchored in the sediment in one side.

Erling Svensen Yes, I think you are right, Franki. Looks like the one here http://nature22.com/estran22/mollusques/gasteropodes/gasteropodes22.php

Marco Faasse Does anybody recognise this kind of eggs (these are from southern Brittany)?

Marco Faasse It has been suggested that they may belong to Acteon tornatilis. Normally it should be on sand. I don't know the egg mass of Acteon, nor could I find photos on the internet. Did I search well enough?

Marco Faasse Acteon could be correct: http://www.ispot.org.uk/node/285862?nav=latest_observations Unfortunately I can't find the SSF-page ..