Cliona celata

Matt Slater I found this on the low shore at Porthkerris, Cornwall - Looks like a Cliona celata but looks different - possibly because its out of the water? Can any one help -was approx8cm across, cheers Matt

Matt Slater still no ideas?

David Kipling Cliona celata in boring and massive forms - I think the 'green buds' that Becky posted a while ago? Here seen in Pembrokeshire.

Becky Hitchin that's a great photo showing both forms

David Kipling This is what Cliona celata looks like round here, Erling.

Bernd Lipsius Hi all. Is this a cliona celata?

Steven Barnard Yep !

David Kipling And the one behind, Bernd?

Steven Barnard Its a Hedgehog sponge. Polymastia sp

Kate Lock The one behind is Polymastia boleteformis.....common name the hedgehog sponge...

Bernd Lipsius that was also my guess

Kate Lock Hey that was a tie Steve!!

Steven Barnard I won... Mine is first ! x

Steven Barnard Anything to distract me from my work...... Makes me want to go and dive somewhere tidal.

David Kipling Cliona celata in boring and massive forms - I think the 'green buds' that Becky posted a while ago? Here seen in Pembrokeshire.

Becky Hitchin that's a great photo showing both forms

David Kipling This is what Cliona celata looks like round here, Erling.

Chris Newton What about this Nic? (Should you not be working?)

Paula Lightfoot Boring sponge Cliona celata nice photo! - I will sort out Dropbox asap sorry got back late on Sunday!

Chris Newton It looks a lot like your photo described as a boring sponge. Could it be the same?

Nicola Faulks Aye, the very same!!

Nicola Faulks Er hum.... lunchtime was spent IDing photos!!

Chris Newton You should get out more! Thanks.

Fiona Tibbitt Hi Chris Newton, did you get my message about the lost torch by any chance? Don't always think my messages get through.

Chris Newton Didn't get the message Fiona but I do have a torch given to me at Browns Bay. Mentioned it to Paula on the night. Give me a call on 07931734589.

Dylan Jones Any ideas as to what these are ?

Matthew Green give us a clue!?

Steven Barnard Cliona celata

Dylan Jones Ahaa!. Don't think I've ever seen it look like that before. Probably only noticed the masive form!. Thanks.

Matthew Green Ah when I saw post there were no photos!

Liz Morris Little cliona 'buttons', you will have seen it before in its large yellow 'boring' form Dylan Jones :)

Erling Svensen Do anybody knows this Cliona and confirm the specie? From South West Norway, 30 meters deept.

Erling Svensen thanks, Dawn Watson

David Kipling There seem to be quite a lot of Cliona species worldwide, many (?all) boring. C. celata is unusual in forming that massive form but that doesn't help here!

David Kipling Erling, is this boring out of rock, or a shell? And how big are those discs?

Erling Svensen They are boring out from a Arctica islandica. The discs are aprox. 3 millimeter across

David Kipling Cliona lobata bores in just shells, whereas celata bores shells and rock. However it sounds too big for lobata, which is supposed to have exhalent papillae 1.6mm max across. Cliona celata thus sounds best bet.

David Kipling http://species-identification.org/species.php?species_group=sponges&id=185