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Facelina annulicornis

(Chamisso & Eysenhardt, 1821)

David Kipling Aeolidiella .... er? Not all that sure on this one! Any thoughts? The cnidosacs are very big. Doesn't feel right for A papillosa or A glauca somehow.

Kate Lock first thing in my head is Facelina annulicornis....??? where did you take the photo.... we get lots around Skomer.

David Kipling Would be a lot easier if it wasn't sticking its front end under a bit of weed! I'll go ask the boss ...

David Kipling Out of Stackpole Aug 2010, so not Skomer.

David Kipling You can see eyes just behind the rhinophores, which made me think Aeolidiella. Isn't F annulicornis more spangly over the main bit of the body?

Peter H van Bragt Hi David, Indeed too bad that the head region is not visible. I think it might very well be A. glaiuca. cheers, Peter H van Bragt

Kate Lock you could be right...I must admit I have not checked a book etc!!

João Pedro Silva Facelina annulicornis has distinct dots on the cerata: http://www.flickr.com/photos/jpsilva1971/7456868104/

João Pedro Silva On the cerata... and elsewhere.

Kate Lock It was the distinct speckly dots on the cerata that made me think of it...but agree they should be on the body too.

Message posted on NE Atlantic Nudibranchs on 11 Jul 2012
Morten Bjørn Larsen When I showed this photo to some non diving friends, they asked if a nudi gets blinded or annoyed by the flash... Do they?

Jongrak Lee They have rhinophores, a sensory organ which is shaped like antena, instead of eyes... they're stimulated both by chemicals n physical touches.

Jongrak Lee With my experience, it seems that they get more relaxed n better narcotized in dark conditions.

João Pedro Silva But they do have eyes (visible in this photo at the base of the left rhinophore). Of course, sight is not their best developed sense and I don't think they see images and in most cases aren't even capable of determine the direction of the light.

René B. Andersen I have to try several times where they change direction when I use focus lights so they registers something, and it's not just once but every time I change position, it kept running away from me

João Pedro Silva Some do more than others... and it also depends on what they're doing (simply crawling, "sniffing", spawning, feeding, mating...). There's one particular case which puzzles me: Felimare picta. They sometimes (not always) show a significant depression in the position of the eyes, a process which is part of the evolution of the eye to allow for the detection of the direction. http://www.flickr.com/photos/jpsilva1971/6215369109/

Jongrak Lee I have not saw nor heard an aeolid nudis having eye spot, yet. Some aplysiomorph do.

João Pedro Silva Jongrak Lee, it's visible in Morten's photo, can't you see it? I can show quite a few from other species.... just a few examples: - Calma glaucoides: http://www.flickr.com/photos/jpsilva1971/7427839434/ - Calma gobioophaga: http://www.flickr.com/photos/jpsilva1971/7229842190/ - Dondice banyulensis: http://www.flickr.com/photos/jpsilva1971/9462773034/ - Flabellina babai: http://www.flickr.com/photos/jpsilva1971/8960759043/ - Facelina annulicornis: http://www.flickr.com/photos/jpsilva1971/9361233378/ etc etc etc

Jongrak Lee Yeah, I'll check it out.:-)

Jongrak Lee I was mistakingly wrong. Got confused with sth else. Thank you for your comment.

Hilde Sæterøy Palladino Beautiful picture!

João Pedro Silva In the last couple of dives Facelina annulicornis was everywhere we looked. Fierce little beasts.

Message posted on NE Atlantic Nudibranchs on 28 Jul 2012
João Pedro Silva Trailing (our tailgating, as you preffer) behaviour on Felimare villafranca? Or just a coincidence? From the nudibranchs occurring here in Portugal, I only saw this behaviour on Platydoris argo. (Facelina annulicornis on the top was a bonus)

Message posted on NE Atlantic Nudibranchs on 25 Jul 2012
João Pedro Silva Facelina annulicornis Local: Sesimbra, Portugal Spot: Paredes do Cabo Profundidade: ~15m Data: 26-07-2012

Message posted on Nudibranquios on 25 Aug 2013
João Pedro Silva After F. auriculata, its closest "cousin" in Portuguese waters, Facelina annulicornis... always looks nice in that glitzy dress.. when you can find one.

Message posted on NUDIBRANCH LOVERS on 15 Jan 2012
Paula Lightfoot Advice please! A professional photographer has asked me to collect nudibranchs so he can photograph them for a book about Yorkshire wildlife. Problem is, we dive in the evenings and it's dark when we get back so he'd have to keep them in a tank overnight and photograph them the next day. Is this ok to do?

Marco Faasse It is important to put them in clean seawater without algae (which consume oxygen at night) or other organisms and to keep them cool. Some people keep them in the fridge overnight. Better too cold than too warm.

João Pedro Silva Near the vegetables in your fridge, it's cold enough but not too cold.

Marco Faasse Yes, the 'warmest' part of the fridge :-)

Brendan Oonk Keep in mind that nudis are carnivorous. There are examples of the number of nudis in the container going down, without them escaping .... :(

Paula Lightfoot Thanks very much - I will make sure the photographer knows this and can keep them in the necessary conditions before I agree to do it. He has a background working in conservation/ecology so I think he will do what's necessary. I would only collect the ones that are present in large numbers at the moment e.g. Janolus and Polycera.

João Pedro Silva Brendan Oonk, I found out that while collecting Caloria elegans and Facelina annulicornis to the same jar... at the end of the dive there was F. annulicornis and some cerata of C. elegans.

João Pedro Silva Paula Lightfoot, take a small cooler with you to carry the nudibranchs back home. Don't know how hot it's there right now but they don't handle high temperatures too well (air temp. here today was 37ºC).

Ian Smith In the hot weather of June & July I found the electronic coolbox sold at Aldi for £35 was very good for keeping stuff alive on the way home in another wise roasting car. Also used to keep ice blocks cool on outward journey for use in a non-electronic coolbox on return journey. Works off mains & cigarette lighter in car. In my car only works when motor is running - guards against flattening battery. I try to park in shade. If non-smoker, make sure you learn how to start the current - cig lighter needs pressing in before pulling out - on my first outward journey the box didn't work because I hadn't realised this. I find rectangular low-fat spread boxes fit nicely - you can separate specimens in them against mutual predation and decay of anything that dies. 250g boxes have nearly same surface area as 500g, and can get more in the coolbox - I use a mixture. Also useful if staying away overnight, but fan is noisy so need mains socket away from bed.

Ian Smith Paula you mentioned Janolus. J. cristatus is notorious for shedding its cerata. Needs very gentle handling and photographing ASAP.

Peter H van Bragt I'm sure there must be heaps of in situ underwater pics available. Why not use these???????

Paula Lightfoot I didn't know that about Janolus very useful advice thank you. Yes Peter there are loads of very high quality in situ photos (not least in this group!) but I think the photographer wants it to be all his own work, and obviously they must all be taken in Yorkshire. Still, I think I will suggest having a supplementary page of nudi/marine life photos taken by others in Yorkshire as this will give greater diversity of species covered and less chance of harming wildlife.

Message posted on NE Atlantic Nudibranchs on 11 Aug 2013
Samantha Varns A few of my own pics species clarification would be appreciated xxx

João Pedro Silva This one is definitelly Limacia clavigera: https://www.facebook.com/photo.php?fbid=10152911946985641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Not much detail but the arrangement of the cerata makes me think it's probably Flabellina ischitana: https://www.facebook.com/photo.php?fbid=10152911938905641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Doto fragilis: https://www.facebook.com/photo.php?fbid=10152911989860641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Limacia clavigera: https://www.facebook.com/photo.php?fbid=10152911481875641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Flabellina pedata: https://www.facebook.com/photo.php?fbid=10152911490070641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Flabellina affinis: https://www.facebook.com/photo.php?fbid=10152911497540641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Not really clear but appears to be Calmella cavolini: https://www.facebook.com/photo.php?fbid=10152911499990641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Cratena peregrina: https://www.facebook.com/photo.php?fbid=10152911508385641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Crimora papillata: https://www.facebook.com/photo.php?fbid=10152911523160641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Facelina auriculata: https://www.facebook.com/photo.php?fbid=10152911530580641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Facelina annulicornis: https://www.facebook.com/photo.php?fbid=10152911566780641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Flabellina affinis: https://www.facebook.com/photo.php?fbid=10152911929510641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Cratena peregrina: https://www.facebook.com/photo.php?fbid=10152911931670641&set=a.10152911481660641.1073741835.589765640&type=3&theater

João Pedro Silva Flabellina affinis: https://www.facebook.com/photo.php?fbid=10152911935540641&set=a.10152911481660641.1073741835.589765640&type=3&theater

Ian Smith I hope Joao gets those kisses now for his effort ;-0

João Pedro Silva I decided not to identify those from "Africa" because I don't know if they're from the Mediterranean, the Atlantic or the Indian ocean.

Samantha Varns Xxx kisses an thank you xxx

João Pedro Silva Samantha Varns, next time you could allow comments on the album as it makes it a lot easier :)

Samantha Varns Sorry didn't realised it was blocked

Bernard Picton Could you add countries to the African ones?

Samantha Varns Easy they were all in Kenya diving off from mombassa the beach was Diana beach :-) xxx

Message posted on NE Atlantic Nudibranchs on 14 Jun 2013
Bernard Picton

Christian Skauge Nice!! This species is usually very rare in Norway, and has just been spotted a few times in recent years. We found it at last year's Nudibranch Safari as well, remember :-) How deep was this Erling? T. lineata seems to be thriving on hard bottom with no apparent food source in relatively deep water. I have seen it two times, both at around 27-28 meters depth. Good pictures too!

Bernard Picton I agree, I can never figure out what they are eating. It ought to be a soft coral, I suggested Sarcodictyon in my book.

Christian Skauge Seaslugforum also states "unknown" in regards to food. But the miniscule coral you suggest would be consistent with where I have found it both times. Since our other Tritonia sp. also feed on soft coral this seems very near-fetched :-)

João Pedro Silva Never seen it and it's not included in the most recent checklist for Iberia... but the distribution range suggests it may be also present here in Portugal.

David Kipling Loads of them in west Wales, often on silty sites in relatively shallow water (well I don't generally dive deep!). You get the impression that they are grazing on something just under the surface of the silt.

Christian Skauge Interesting observation - so different from what I have seen here in Norway :-)

David Kipling I'll dig out a small album of T. lineata pictures and see what you think.

Christian Skauge Cool, let us have a look :-)

Erling Svensen Well, I was down at 45 meters. Lots and lots of them.

Christian Skauge haha that certainly proves that this is a deep species in out parts of the wood :-)

Erling Svensen Deep sea specie?? (is that deep?) ;-)

Christian Skauge Well... deeper than most nudies then.. I know you don't think 45 m is deep :-D

Bernard Picton Tell them about the sponges on my visit - no, on second thoughts, maybe not!

Erling Svensen I will never, never tell them, Bernard, that you dived to 55 meters and would come with me back ut because there was so many, nice sponges... (never.....)

Erling Svensen ... not come with me back up......

Bernard Picton Had to take a couple of photos, I'm not as quick as you are!

Sarah Bowen Is this forum going to be an opportunity to tell tales on each other's bad diving habits then?!

Bernard Picton No! Serious matters of Sea Slug biology only! No jokes, unless they are funny personal anecdotes. We're making the rules up as we go along Sarah...

Sarah Bowen Fine by me; promise to be more constructive with posts in future and leave the village idiot ones to David!

Kate Lock Not sure about the deep water - this is one of the most common species that we find in West Wales.....and in Skomer MNR we find them at all depths...from 5m down to 30m...(don't often venture deeper)...most of the sites are moderate current and moderate wave exposure and are usually found on the slightly silty bryozoan turf. I am not convinced that they feed on a soft coral! But am open to persuasion....

Bernard Picton Skomer is the one place I know of where you can find them regularly Kate. And I agree, there is usually no sign of what they could be eating.

Bernard Picton Sarah, It is intended to be quite light-hearted... Life's too short to be that serious..

Kate Lock mmm so Skomer seems to be the most popular place for Tritonia lineata and Facelina annulicornis......both pretty scarce elsewhere ....wonder if they have anything in common?

Liz Morris Sorry Bernard, we seem to go through phases of having lots of them around here too just like Kate. Mind you, I've not seen lots for a couple of year. Possibly depending on the month I guess. I'll keep my eyes peeled!

Christian Skauge Time of year is also sometimes very important. It would seem this species is peaking now, and not in march/april as most of our northern species does. See new post on the Hero formosa.

Message posted on NE Atlantic Nudibranchs on 02 Feb 2012
Animalia (Kingdom)
  Mollusca (Phylum)
    Gastropoda (Class)
      Heterobranchia (Subclass)
        Opisthobranchia (Infraclass)
          Nudibranchia (Order)
            Dexiarchia (Suborder)
              Aeolidida (Infraorder)
                Aeolidioidea (Superfamily)
                  Facelinidae (Family)
                    Facelina (Genus)
                      Facelina annulicornis (Species)
Associated Species