We found this animal on the shore at low water at a spring tide and don't recognise it at all
No interactions present.
Goodness. I spent nearly an hour on this last night and rushed here this morning to see if someone had IDd it (someone will).
I even looked at sea cucumbers..
It is so like 'my' possible Jorunna here -
http://www.ispot.org.uk/node/326122 but on steroids!
It's lovely; roll on an ID.
It might be useful to say the size..
I think this is possibly a sea slug in a defensive or stressed posture. The appendages are possibly the swimming or mobility folds along the 'foot'.
Browsing the Web ('sea lemon' or 'nudibranchs'), one can see how those folds can be compressed into 'leg lookalikes', as the folds are highly flexible to allow for free swimming.
If I am right, then there is a good chance that this 'creature' IS a Sea Lemon (Archidoris pseudoargus). I have noticed that they range from pale yellow (straw) to quite deep orange and often have the scaly, warty, blotched appearance as seen in the photo.
Goodness I never thought it could be Archidorus pseudoargus. i have never seen such an orangey one or one hunched up like that.
Well, it may not be - it's marked as Likely because of my 'reputation!'!
The uniform 'flecks' are not specially a feature of Archidorus pseudoargus but notice that they too are compressed in one picture.
There are some features about it that raised my suspicions - hopes really.
It's a shame this post has not attracted more attention from marine specialists - I am not one, though I have put up a lot of 'marine' posts recently.
So...good luck Mary. I do hope this is not your last post!
Could it be an anemone that's been dislodged and washed up? The spots on the side remind me of Sagartia elegans column, and the 'rosette' at one end might be partially retracted tentacles rather than a nudibranch's gills. Difficult though, I've never seen anything looking like this! Is there subtidal rock near where it was washed up?
Goodness what an interesting idea - as good as mine!
You are right about the speckles on some anemones and the rosette could be the feeding end of one.
But the appendages are not in character.
Delightful Anatomicals here -
Oh, how NICE to have someone else on the case!
C'mon Mary - SIZE! (it won't help much - though David might use it)
I forwarded this to Andy Mackie in the National Museum of Wales, and he suggests that it could be the broken off tip of the tail of a terebellid polychaete (possibly Eupolymnia nebulosa).
Goodness, well done Snappy (your first post in 3 years!)
A good man to have on the case - Andy Mackie.
It seems likely and I hope he is right...will we ever know?
This one specially
You or Mary should put it up as an ID.
Ok, have done! (Hope I did it right!)
yes, absolutely Snappy.
I do hope Mary will sleep well now!
I think I will agree to see what happens to Likely...
And so, see how powerful I am? NOW, it's likely!
I never thought ayone could solve this,it's so odd. There's a good photo of Strawberry worm with same colour & same shaped 'pods' along sides in Paul Naylor's Gt British Marine Mammals, but with dots rather than flecks (does the 1st photo show the 2nd one stretched?). And a clear photo from "photo gallery-Polychaetologists Association" http://034bd98.netsolvps.com/photos/#Eupolymnia shows tail tip. If the LHS is the tail tip is the RHS broken off & showing innards, or has it regenerated the "gills"?
Yes Chris, pretty tricky stuff, isn't it.
We'll never really know but my 2nd link and yours just about wraps it up. (Hold Shift when clicking the links - new window)
There's more here from Norway
Whole animal 15cms x 1cm
Full marks then to Andy Mackie at Amgueddfa Cymru.
....it could be this bristle worm. This again is another species difficult/near impossible to ID from pictures alone. The white spots are indicative of this species, but only half a one makes it really difficult (I guess out of its burrow the chances of it losing it's tentacles are huge). I'm still abstaining on this one (chicken).
Aha, welcome HERE Graham (at last!).
I think we ARE satisfied with Andy Mackie's diagnosis.
But I think, like you, I'd be hesitant. I was here at the beginning, so I'm quite happy to agree - more relieved I think!
I'm not, as it seems a tiny fragment. How big was it snappy? apologies meant Arionac
...with my abstention too - lots of it missing but gulls, fish, etc lots can go missing I suppose. I'd be happy with bit of an annelid maybe.
a repeat - deleted..
Oh no Graham, not Snappy but Mary (arionac)!
MARY, Mary? Are you there? We have been asking for size for a long time!
Just when you thought it was safe to get back in the water!
Yes, sorry Graham I meant Chris (welcome Chris!)
You two should have been here ages ago..where's JoC?
Have you looked at the links - I think them pretty convincing -
Origin 14th May 2014
And now this http://www.ispotnature.org/node/407036 after a year of learning. My agreement then, stands taller now.
I do hope Chris, Graham and even JoC will now see some light.
So snappy, what chance of a title change?
Two and a half abdominal segments of a terebellid. E. nebulosa does has this pattern & if Andy thinks it's the same based on his knowledge of the local fauna I'll happily agree.
It's nice to see you hanging around UK Marines Leslie.
There is NO doubt in my mind that this is E.nebulosa but I am still the only one - you forgot to add your agreement.
Now see mine http://www.ispotnature.org/node/407036
I did see it the other day and it's a really nice one. I'm going to be in Wales in August and hope to get out & do a bit of collecting, maybe find some of these beauties.
Incidentally, many terebellids & other polychaetes do autonomize readily in response to disturbance. Like a lizard's tail the broken posterior section will wiggle about to attract attention while the anterior slips away. Some species of Polycirrus (another terebellid genus) is quite funny in that it's the head region that stays in one spot, waving all tentacles while the headless body crawls off; later it will regenerate the head. that can make it difficult to accurately identify them using keys that rely on the number of thoracic chaetigers to get to species.
Thanks Leslie - it's common to forget to agree when commenting.
I have added a comment (for you) in my own post http://www.ispotnature.org/node/407036
I wish you well on your forays. If you post PLEASE use the Habitat Tag Marine; that way the 'few' will pick up your posts amid all the spring flowers, moths and birds!
I tend to show up where ever polychaetes & other marine critters are featured, sometimes it just takes me a while to find the right sites. :^)
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