Ton Van de WaerdtTergipes tergipes the smallest nudi of the Netherlands, this one is about 2mm big
Olympus E500
Sigma 105mm
Strobe Ikelite DS125
ISO 100
F 9
1/80
John de Jong My smallest of the weekend, Tergipes tergipes @Zeelandbrug
Olympus E330:ISO-waarde: 200 | Belichtingstijd: 1/60s | Diafragma: 18.0 | Brandpuntsafstand: 50,0mm with +10 diopter
John de Jong Bernard Picton from the same dive were you thought it could be F. browni, but this is another. Left Tergipes tergipes, but one of them has a red glance in the body. Is that possible?
Bernard Picton I think this probably is Flabellina gracilis as you originally suggested. Tergipes tergipes does have quite bright red marks some times..
Peter H van Bragt Indeed F. gracilis. You can see it also on its typical food, Eudendrium
John de Jong My smallest of the weekend, Tergipes tergipes @Zeelandbrug
Olympus E330:ISO-waarde: 200 | Belichtingstijd: 1/60s | Diafragma: 18.0 | Brandpuntsafstand: 50,0mm with +10 diopter
Terry Griffiths Not a great photo i was going to delete when i seen the nudibranchs in the top left corner you like your thoughts on them thanks
Sarah Bowen I would suggest Tergipes tergipes, especially with the small round egg masses in the lower centre of the picture. See David Kipling's post from Gower - we'd never have known this until yesterday!
Sarah Bowen Pictures taken under the microscope to follow!
David Kipling Oooh yes, those egg cases and scale look right for something tiny like Tergipes. Single row of cerata is characteristic of the wee beasties.
John de Jong Bernard Picton from the same dive were you thought it could be F. browni, but this is another. Left Tergipes tergipes, but one of them has a red glance in the body. Is that possible?
Bernard Picton I think this probably is Flabellina gracilis as you originally suggested. Tergipes tergipes does have quite bright red marks some times..
Peter H van Bragt Indeed F. gracilis. You can see it also on its typical food, Eudendrium
Richard Yorke I first thought the first two were Tergipes tergipes, but I can see no red streaks on their heads, does this mean they are all Eubranchus exiguus, which is what I thought the third one was, or am I way off the mark?
Richard Yorke I should have said, they were on Obelia on kelp off Eigg (NW Scotland)
Roan Stoel Two pictures taken today in he Oosterschelde, Netherlands. I could use some help identifying the two. We're thinking that they might be eubranchus rupium or tergipes tergipes.
David KiplingTergipes tergipes with eggs on Obelia longissima - for Terry Griffiths
Terry Griffiths thank you now over 20 species seen in 2 dives this weekend.
David Kipling Quite frightening to think the whole nudi in your picture is smaller than one of the rhinophores of the Polycera ...
Terry Griffiths One of those things i do take photo's of anything that might have a nudibranch on and look on the computer before the delete button, always worth the look
David Kipling Yes, likewise. I can also recommend grabbing the occasional handful of hydroid and bagging it to look under a stereo microscope (or loupe at a push), it's often crawling with minute Eubranchus and the like.
Liz Morris wow - beautiful! I am going to start looking for this one. I'll definitely need a handlens and a collection bag though!
David Kipling In case anyone thinks I've suddenly developed Erling Svensen-like underwater super-macro skills, this was taken in a petri dish with a Canon dSLR attached to a dissecting microscope!
David Kipling Ah but there's a long game here. I can now start to pull the "but darling, if I had a proper macro lens for the Pen like Rob has then I'll be able to take pictures like this ... oh is it my birthday soon, I'd forgot!".
David Kipling Especially after Sarah made "ooh, this is nice..." noises when she used the Pen on the Red Sea trip as you'll recall. Tee hee ;)
Becky Hitchin I think I almost saw these the other day, I certainly saw Obelia with tiny egg masses on. Just no nudis (that I can see in my bad photos)
David KiplingEubranchus exiguus is another tiny one you find there as well, apparently (Habitas). Very hard to get pics in the field, really need to bring a clump home and look in a dish.
George Brown Is this small nudibranch Facelina auriculata? About 20mm long. Isle of Muck, Scotland. Depth 6 metres.
João Pedro Silva Yes, it's F. auriculata.
João Pedro Silva Not sure about the one on the lower right corner, though. Eubranchus perhaps?
João Pedro Silva Hang on, there are at least 4 of those smaller ones on the photo.
George Brown Might be João. What about Tergipes tergipes?
João Pedro Silva More likely to be T. tergipes. You probably can see on higher resolution.
George Brown And many thanks for the Facelina ID confirmation. Wrt Tergipes, if I zoom in I can recognise the zigzag pattern of the cerata. And as you've spotted, they come in gangs in this part of the world feeding on Obelia.
João Pedro Silva You're welcome, George. F. auriculata is actually very common here in Portugal.
O Gajo Dos Olivais Yeap, always look for the reddish spot behind the rinophores. Its the oesofagus. Its visible in the species. Anelated rinophores, first group of cerata separated from the others, white tips on the oral tentacles and rinophores...
I'd say this is F. auriculata v. curta... what do you think?
George Brown Wow, very well put Fernando! Many thanks.
João Pedro Silva I'd say simply F. auriculata. Isn't F. auriculata var curta a junior synonim of F. bostoniensis? I know you've been reading a lot MarLIN, but there's this "additional information":
http://www.marlin.ac.uk/speciesinformation.php?speciesID=4645
O Gajo Dos Olivais Yeap. And I'm not even shore it is curta. The camera angle and the way the cerata are don't give a clear view of the "tail" . I was just wanting to know because on a picture I have, that extension of the mantle is almost the size of the cerata covered area. :)
João Pedro Silva Btw, Fernando, I'd say the blue iridiscence on the cerata is a key characteristic but those you've referred are common to many others. Check Bernard Picton and Christine Morrow's descriptions especially where they refer the "Key identification features": http://www.habitas.org.uk/marinelife/species.asp?item=W15270
O Gajo Dos Olivais I got messed up now JPSilva. It reads "... lacks a blue irridescent sheen distinguishing it from "Facelina auriculata".. so... Is it or is it not synonim?
João Pedro Silva It's very clear: Facelina bostoniensis "lacks a blue irridescent sheen distinguishing it from Facelina auriculata", meaning Facelina auriculata has the blue iridescence on the cerata. The junior synonim (i.e., invalid) for Facelina bostoniensis is "Facelina auriculata var curta". Same with F. curta, F. drummondi and F. gigas. I hope this helps.
O Gajo Dos Olivais Oh. Ok. Thanks. Not yet very familiar witb what "junior synonim" and other terms mean :)
João Pedro Silva Ok, I'll explain in a private message so we're not flooding the group with this.
Penny Martin is this an egg sac on Obelia geniculata ???
David Kipling Yes, looks like tiny nudi. Tergipes tergipes perhaps?
Penny Martin thanks .... didn't see the nudi ..... but will look out for it now but possibly need better eyes or a magnifying glass !!
David Kipling Very very hard to see in field - essentially impossible underwater, can sort-of do it if you see eggs by eye and then bring fluff to surface to look afterwards with a decent loops. Easiest under a microscope, these nudis are only 1mm long!
David Kipling http://www.habitas.org.uk/marinelife/species.asp?item=W14860
"Habitat: Feeds on several species of Obelia but especially Obelia geniculata (normally found on kelp fronds). The spawn consists of small white capsules."
David Kipling Although these were taken in a rockpool at extreme low water, you should also be able to find these when diving by looking in Obelia. Tergipes tergipes is a tiny aeolid nudibranch.
David Kipling Photos of eggs as a special request from Richie West.
David Kipling Saw our first ever Tergipes tergipes yesterday, thanks to Nathalie Yonow giving the hint to look for it at this location! Found about a dozen of them, all < 2mm in size.
João Pedro Silva Then you get that fatal question at the end of the dive: "Why did you want me to photograph the tip of your finger?"