#chromodorid
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cassandroid.substack.com
Can you tell Macfarland's chromodorid vs Harlequin sea goddess apart? #DuoNat #iNaturalist
duo-nat.web.app/p5l7aq
August 20, 2026 at 5:42 PM
cherschfield.bsky.social
This past fall I started my Master’s in Biology @sfstatebio.bsky.social and @calacademy.bsky.social!

My project aims to generate a molecular phylogeny for the chromodorid genus Verconia to investigate color pattern evolution and assess the presence of undetected cryptic and pseudocryptic species
March 29, 2026 at 9:25 PM
caseagrant.bsky.social
As #EarthWeek comes to an end, be sure to share your photos of the ocean, waterways, and marine animals throughout California with the hashtag #SeaGrantEarthWeek. Tag us @CASeaGrant for a chance to have your photo shared! 📸 Scott Gabara, MacFarland's Chromodorid nudibranch
December 6, 2024 at 3:36 AM
agenta30.bsky.social
Comment and I’ll tell you what sea slug you are! 🌊🐌 #fyp #seaslug #seabunny #nudibranch #silly #furryfandom #chromodorid #marinebiology #gastropod #shellos #gastrodon #leafsheep #jorunnaparva #bluedragon
March 20, 2025 at 1:37 AM
calacademy.bsky.social
Looking for a challenge? See how many you can find from our most-wanted species list.
Illustrated image shows a piece of coral and rock covered in blue and yellow chromodorid sea slugs, with one blown up in size. Text overlay reads “CA Chromodorid: This sea slug’s population in SoCal is recovering after major declines in the 90’s. CC-BY-NC Craig Hoover.” Illustrated image showing a green anemone with sand near its mouth. Yellow illustrated overlay has text reading “Anemones: Help ID Anthopleura anemones, located all over the state’s intertidal communities!”
June 17, 2025 at 7:33 PM
wellreadnaturalist.bsky.social
For those who would like to learn more about this lovely little nudibranch, here is a link to the @inaturalist.bsky.social species page about it. www.inaturalist.org/taxa/469723-...
California Chromodorid (Felimare californiensis)
The California blue dorid, Felimare californiensis, is a species of colourful sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae that eats dysideid sponges. (Source...
www.inaturalist.org
November 14, 2025 at 6:32 PM
milliedonut.bsky.social
- Whale sharks

- Seals! (Esp. Grey seals and harbor seals)

- Octopuses

- Orca whales

- Sea otters

- Bowmouth guitarfish

- White-spotted pufferfish (bc of their nests)

- Penguins

- Sea slugs! (Esp. the leaf sheep, California chromodorid, chromodoris willani, and chromodoris quadricolor)
January 23, 2025 at 10:20 AM
coastalpaleo.bsky.social
19. The only nudibranch in socal that's more absurdly colored than the California blue: MacFarland's chromodorid, Felimida macfarlandi. 🦑🦀
A light purple nudibranch with three golden yellow stripes and feathery rhinophores - it's climbing through brownish hairy algae. A light purple nudibranch with three golden yellow stripes and feathery rhinophores - it's climbing through brownish hairy algae. A light purple nudibranch with three golden yellow stripes and feathery rhinophores - it's climbing through brownish hairy algae. A light purple nudibranch with three golden yellow stripes and feathery rhinophores - it's climbing through brownish hairy algae.
May 26, 2026 at 6:34 PM
coastalpaleo.bsky.social
17. OK, I made it back out earlier this week and found this dazzling California blue chromodorid, Felimare californiensis - one of my favorite nudibranchs (sea slugs). 🦀🦑 #tidepooling
A dark blue sea slug curling over; it has a light blue edge, dark blue feather-like rhinophores, and bold yellow oval-shaped spots. It's climbing on dark olive colored sargassum seaweed. A dark blue sea slug curling over; it has a light blue edge, dark blue feather-like rhinophores, and bold yellow oval-shaped spots. It's climbing on dark olive colored sargassum seaweed. A dark blue sea slug curling over; it has a light blue edge, dark blue feather-like rhinophores, and bold yellow oval-shaped spots. It's climbing on reddish seaweed just below the surface.
May 24, 2026 at 5:35 PM
coastalpaleo.bsky.social
#worldwildlifeday A couple of days ago I tried flipping rocks while #tidepooling... and found my favorite #socal nudibranch (sea slug), MacFarland's chromodorid (Felimida macfarlandi). 🦑🦀
A split image showing the flipped over rock on the left, and on the right, a macro shot of a light purple sea slug with three yellow stripes and a yellow and white stripe around its margins.
March 4, 2026 at 8:46 PM
coastalpaleo.bsky.social
This one is technically not even a nudibranch, but an opisthobranch! It's quite beautiful, but pales in comparison to some of our actual nudibranchs. We happen to have some of the most beautiful nudibranchs in the world along our coast, like these:
An opalescent nudibranch; the head and tentacles are pale electric blue and the cerata are orange with white tips A reddish pink Hopkin's rose nudibranch; the body is a reddish magenta, and the cerata are cotton candy pink with white tips A California chromodorid with a blue body and bold goldenrod spots A McFarland's chromodorid, pale purple with gold stripes
October 9, 2025 at 5:27 PM
coastalpaleo.bsky.social
Pholad siphons can be very well camouflaged! Here is one I found while taking photos of a California blue chromodorid sea slug. This clam is a scale-sided piddock, Parapholas californica. You would never know there was an entire clam in the rock underneath this doodad. 🦀🦑 #socal #tidepooling
The siphon of a rock boring clam in a tidepool, in focus, while a blue and gold sea slug crawls across the foreground, out of focus. The inhalant siphon of a pholad clam. The siphon is nearly round with many delicate finger-like structures in a radial pattern with many branches off of them, resembling a fractal pattern - the structures are white, orange, and red. The inhalant siphon of a pholad clam. The siphon is nearly round with many delicate finger-like structures in a radial pattern with many branches off of them, resembling a fractal pattern - the structures are white, orange, and red. There is a smaller exhalant siphon that is a simple round hole, uncamouflaged.
February 2, 2025 at 4:16 AM
coastalpaleo.bsky.social
Another chromodorid nudibranch (sea slug) from the southern California coast - a California blue, Felimare californiensis! Incredible colors! Much more common than the purple MacFarland's, and larger, but ecologically similar as a sponge predator (e.g. 1st pic). 🦀🦑 #tidepooling 📸OlympusTG6
A blue sea slug with golden yellow spots feeding on pale yellow sponges that look like egg-shaped masses with large holes; the image is repeated as a reflection on the still water surface, making the photo a bit trippy. A blue sea slug with yellow spots crawls in a tidepool; a pale oval structure with two large holes ominously lays in the background - the siphon of a rock-boring clam. The head of the blue sea slug; the "nose" is rounded and there is a pale blue stripe around the edge. In the deep dark navy blue center there is a cluster of circular golden yellow spots, and behind these, two even darker blue rhinophores ("antennae"); spots are more spaced out behind the rhinophores. The blue sea slug marches forth amongst a miniature jungle of red algae, green algae, pink algae, and delicate hydroids.
January 31, 2025 at 7:10 PM
coastalpaleo.bsky.social
Happy to keep providing much needed timeline cleanses: yesterday I saw a slug that I've been looking for for a year, one of nature's miracles: MacFarland's chromodorid, a vivid purple nudibranch! Absolutely stunning. 😍 Eats sponges. #socal. 📸Olympus TG6. #tidepooling 🦑🦀
A purple and yellow sea slug! It's a chromodorid, so it is smooth, with a light purple color, a white line at its edge, a bright yellow line down its back, and another pair of yellow lines on its flanks; the purple becomes darker next to the yellow to give it incredible contrast. The rhinophores are dark purple. A purple and yellow sea slug! It's a chromodorid, so it is smooth, with a light purple color, a white line at its edge, a bright yellow line down its back, and another pair of yellow lines on its flanks; the purple becomes darker next to the yellow to give it incredible contrast. The rhinophores are dark purple. A purple and yellow sea slug! It's a chromodorid, so it is smooth, with a light purple color, a white line at its edge, a bright yellow line down its back, and another pair of yellow lines on its flanks; the purple becomes darker next to the yellow to give it incredible contrast. The rhinophores are dark purple. A purple and yellow sea slug! It's a chromodorid, so it is smooth, with a light purple color, a white line at its edge, a bright yellow line down its back, and another pair of yellow lines on its flanks; the purple becomes darker next to the yellow to give it incredible contrast. The rhinophores are dark purple.
January 29, 2025 at 5:21 PM
scuba-for-1.bsky.social
A couple of Porter's Chromodorid (Felimare porterae)
#oceanlove #scuba #underwaterphotography #oceanlife #marinelife #nudibranch #seaslugs
February 26, 2025 at 10:39 PM
scuba-for-1.bsky.social
Porter's Chromodorid
(Mexichromis porterae)
#oceanlove #scuba #underwaterphotography #oceanlife #marinelife #nudibranch
February 18, 2025 at 9:46 PM
fossilforager.bsky.social
Hi! I based this design on a California chromodorid (Felimare californiensis)! Thanks again for picking this little guy up :)
November 14, 2025 at 4:22 PM
fossilforager.bsky.social
California coast inspired enamel pins 🌊💕

available here! shop.fossilforager.art
A photo of a large enamel pin featuring a leopard shark, kelp, garibaldi, and a bat ray. The pin is gold plated and has a dark blue ocean background. An enamel pin of an opalescent nudibranch, a colorful sea slug with a light blue body, yellow and blue stripes, and orange flame-like projections. A tiny enamel pin of a blue-banded hermit crab, a brown hermit crab with a black and orange shell from a turban snail. It has blue-tipped legs. A tiny enamel pin of a California chromodorid nudibranch. It is dark blue with yellow spots, and lighter blue stripes markings along the edges of the body.
July 27, 2025 at 8:06 PM
nudibranch.bsky.social
You might think the bright pink of Verconia verconis, our #Nudivember species today, would make them stand out, but they perfectly match the color of the sponge they feed on, complete with the shape of their body and even the texture.

www.inaturalist.org/observations...
Verco's Chromodorid (Verconia verconis)
Verco's Chromodorid from South Australia, Australia on December 16, 2020 at 12:19 PM by Matt Tank
www.inaturalist.org
November 29, 2024 at 7:55 PM
jeannehazeledits.bsky.social
2/3 three and a half inches. Although it has been found up and down the California coast, the California Chromodorid went extinct in Northern California in the mid-1980s. However, thankfully this resilient sea slug has been popping up all along the coast since
February 11, 2025 at 9:44 AM
jeannehazeledits.bsky.social
1/3 The California Chromodorid is a vibrant species of sea slug. Also known as a kind of nudibranch, the California Chromodorid can be found in the Pacific Ocean all along the California coast, as its name suggests. It eats mostly various species of sea sponges and only grows to a length of about
February 11, 2025 at 9:44 AM