Red-lined flabellina - Coryphellina rubrolineata

Cratena nudibranch while eating.Its flashy coloration is aposematic, i.e. it warns predators of the intrinsic poisonousness if by chance an inexperienced fish were to eat it would spit it out due to the terrible taste.
(Canon100, 1/250,f16,iso10...

This beautiful Batangas halgerda I found near Candidasa (Bali).

Olympus EM1X

Nudibranch

Nudibranch - Nembrotha kubaryana

This photo take in Hong Kong - basalt island , she walking top on the stone , is really good position

Two Cratena are quietly feeding on hydroids in the sea of Casteldaccia. See the open mouth flanked by the oral tentacles. Notice the vertical orientation of the mouth that is the most common configuration in all sea slugs.(Canon100,1/200,f20,i.160)

Olympus

Nudibranch

If you were to count all the shades of white, purple, orange, yellow, blue and pink contained in a Mediterranean Flabellina I think one page (in small print) would not be enough! Sept_2023 (Canon100, 1/200,f13,iso100)

Phyllidia occelata looking like a meringue pie (f/13, 1/320, ISO-6400, 50mm, UCL-165). - Erik

Costasiella sp. & Bunodeopsis sharing land on algae

Olympus EM1X

Chromodoris sp. on talisay point

The weird face of Flabellina affinis (pink flabellina). (f/16, 1/80, ISO-100, 33mm, UCL-165 & UCL-67 stacked). - Erik

colers

Chromodoris tricolor_Goa_India_2023
(Canon60,1/200,f18,iso200)

Shot taken with Olympus TG6 and a torch.

This is Kaloplocamus acutus , take this photo in hong kong,
March , 2023

Cyerce Nigra

Cratena nudibranch_2023
(Canon100,1/200,f18,iso200)

A Felimare nudi emerges from a seaweed called Padina pavonica. _Not everyone knows that an active ingredient is extracted from P. pavonica & used in cosmetics for skin moisturize . Natura always reserves surprises!_2023
(Canon100,1/200,f16,i.200)

Red-lined flabellina - Coryphellina rubrolineata

Verconia hongkongiensis
Special nudi in Hong Kong

Flabellinae are often found perched in precarious positions. But by waiting a bit you can often find the right angle to see them almost entirely, as in this photo.Sept_2023
(Canon100,1/200,f14,iso160)

Thecacera sp.