r/nudibranch

Found this dude in Port Townsend, WA. Not sure if he was an anemone? A nudibranch? He wasn’t moving, so I assumed he was an anemone and moved on, but now looking back at my photos I have no idea! Does anyone have any idea about a possible ID?

someone suggested this might be a hooded nudibranch, any thoughts? entirely new to nudis and still learning! thank you!

One of the more common Nudibranchs we find off the East Coast of South Africa, this Halgerda has pretty cool colours.

First time seeing this beautiful rainbow slug! 💓
Been wanting to find this one for awhile now, so worth the wait!

Credit: these are by artist Arina Borevich

⚫⚪ The "Dice" of the Ocean: Meet Jorunna funebris (Funeral Nudibranch).

Doesn't it look like a living pair of dice? Or a fluffy cow? Or a miniature Oreo cookie? 😮‍💨

This insanely cute sea slug is one of the most photogenic creatures in the ocean. Its body is covered in distinct black spots on a snowy white background—a pattern that acts as a warning signal to predators: "Don't eat me, I taste awful."

Why is it so round? It feeds on toxic sponges and stores the chemicals inside its body for defense. The fluffy "bunny ears" on its back are actually its gills (branchial plumes), fully extended to breathe.

📸 Shooting Tip:

Capturing these high-contrast black-and-white patterns and the intricate details of those gills requires dead-on focus. With the divevolk seatouch 4 max plus waterproof housing, underwater touchscreen focusing makes it effortless.

Tap the eye ✅

Tap the fluffy gills ✅

Tap those delicate rhinophores ✅

Just a tap on your screen to lock focus, even with gloves on. No more missed shots of these perfect ocean jewels!

#divevolk #seatouch4max #scubalife #smartphonecase #wawterproofcase #seaslug #underwatercreature #macroperfection

had amazing finds this week!! so happy :)

1. white-and-orange-tipped nudibranch; 2) branched dendronotid; 3) warty shag rug nudibranch; 4) white dendronotus; 5) nanaimo dorid; 6) horned nudibranch; 7) yellow-head aeolid; 8) fisher’s aeolid; 9) humped ancula; 10) chocolate aeolid; 11) monterey dorid

Hi guys ! Looking for anyone who wants to join us on our trip to Amed beach in Bali (everyone and all scuba levels accepted) with Thai Ocean Academy and No Fear Diving , beautiful dive conditions a lot of diverse marine life, good people and a lot of good fun ! Can message me if you have any questions or inquiries

Been a while since I posted figured it was time for the next one

Share your favorite nudibranch and I will use them in a future week!

"Donut" nudibranch - Doto greenamyeri
Nikon D800 in Ikelite housing, Tamron 90mm, ISO100, 1/250 sec @ f/8, Ikelite DS51 strobe

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Looking for help IDing this guy. Found in tidepools in Boiler Bay, OR. I wish the photos were more clear but it was tucked deep into a cave feature. Hoping someone can tell if it’s a triopha modesta or triopha catalinae. Thanks

Hey usually I manage to get someone with much better knowledge than me off of I-naturalist but so far no one’s said what it could be. Hoping someone here could help.

Thanks!