#janolus
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jensseattle.bsky.social
One of the most photogenic nudibranchs in the Salish Sea, Janolus fuscus. #InverteFest #nudibranchs
December 28, 2024 at 3:37 PM
moistmacro.bsky.social
I suppose one of the good things about coming here - I can repost my entire compendium of Nudibranch pictures that I’ve collated over the last 15 years.
So let’s start with my favourite marine slug. This is an undescribed Janolus from the United Arab Emirates
Nudibranch Sea Slug Janolus UAE
October 18, 2024 at 7:30 PM
moistmacro.bsky.social
Is #Nudicember a thing? Nevermind if not - here is an undescribed Janolus #Nudibranch from the United Arab Emirates.
#MarineLife #Inverts
A photograph of a sea slug that has a milky white translucent body colour with yellow and red on the tips of its long cerata
December 1, 2024 at 11:49 AM
moistmacro.bsky.social
This undescribed Janolus Nudibranch is being spotted with increasing regularity in the Arabian Sea (although I suspect it is primarily due to more folks looking for it) #Invertfest #Nudibranch #Seaslugs
A photo of a colourful sea slug that has a translucent appearance whilst its cerata are topped with red and yellow accents.
August 27, 2025 at 9:49 AM
moistmacro.bsky.social
On what might seem yet another dark day - here is something that hopefully will help brighten your mood. An undescribed Janolus #Nudibranch from the Oman Sea.
#🦑 #🦐 #SeaSlugs #UnderwaterPhotography
A photo of a colourful sea slug. Its body is covered in long flowing cerata that are transparent with white lines and tipped by yellow and red points.
January 19, 2025 at 9:23 AM
echinoblog.bsky.social
Interesting orange Janolus from Moreton Island! #molluscmonday www.inaturalist.org/observations...
Genus Janolus
Janolus from Moreton Island, AU-QL, AU on November 24, 2018 at 01:52 PM by Tracey Howley
www.inaturalist.org
May 11, 2026 at 3:23 PM
echinoblog.bsky.social
That slug is FIRE as the kids say! #molluscmonday Janolus ignis! www.inaturalist.org/observations...
Janolus ignis
Janolus ignis from Breaker Bay Crack on February 2, 2026 at 07:28 PM by Camilla Caton
www.inaturalist.org
May 11, 2026 at 3:12 PM
moistmacro.bsky.social
So let’s have another slug. This I believe is Janolus savinkini from Anilao in the Philippines. These can after be found with an accompanying commensal shrimp.
#Nudibranch #MarineLife #Inverts
A sea slug that looks like a big yellow and purple bubble cushion.
December 10, 2024 at 6:50 PM
echinoblog.bsky.social
Those Janolus from Wonder Reef! man, lemmie tells ya! #molluscmonday www.inaturalist.org/observations...
Genus Janolus
Janolus from Wonder Reef on May 9, 2026 at 08:31 AM by Kelly-Anne Masterman
www.inaturalist.org
May 11, 2026 at 3:07 PM
echinoblog.bsky.social
NOM NOM! Janolus likely feeding on some bryozoan deliciousness! #molluscmonday www.inaturalist.org/observations...
Genus Janolus
Janolus from Bitung, ID-SW, ID on February 22, 2026 at 11:35 AM by Tsu Soo Tan
www.inaturalist.org
May 11, 2026 at 3:11 PM
moistmacro.bsky.social
So what do #Nudibranch look like from underneath? This is looking at the foot of an undescribed Janolus that was crawling upside down on the waters surface.
#MarineLife #SeaSlugs #Invertebrates
A photo of a sea slug from underneath looking up through is transparent foot. It is covered over the rest of its body by transparent cerata tipped in yellow and red.
January 16, 2025 at 1:20 PM
futurehistorian.bsky.social
So many nudis, so short a month! Today’s slug is not in my collection, so choosing one of mine to close #Nudivember wasn’t easy. Here’s a bizarre and colourful Janolus savinkini from Komodo, Indonesia.
Thank you so much, @nudibranch.bsky.social for such a fun time!
🦑🌊
#UnderwaterPhotography
A purple-tipped janolus, a colorful sea slug. Its body is yellow and is formed by many papillae and cerata ending in bright purple rings around a spiky tip. The slug sits on a pinkish-purplish sponge.
November 30, 2024 at 9:42 AM
inaturalist.bsky.social
In case their bright colors don't deter predators, this sea slug — Janolus flavoanulatus — can roll into a ball & secrete acids from their cerata (the pointy things serving as their gills).

📷 johan98800 on iNaturalist
📍 New Caledonia
🔗: www.inaturalist.org/observations...
#ObservationOfTheDay
A small sea slug with a translucent white body and pink-and-purple capped spike-like appendages across its body hangs on to a piece of algae.
April 15, 2025 at 4:04 PM
blauwtipje.bsky.social
Janolus hyalinus
Zeelandbrug, dijk, 1e & 2e pijler
Glenn Biscop, 8/9/2022

website: https://www.blauwtipje.nl
find our Blauwtipje app on android and ios

#blauwtipje #nudibranch #janolus #MarineLife
April 3, 2025 at 10:00 AM
echinoblog.bsky.social
A gorgeous Janolus, J. savinkini-named for Russian malacologist, Oleg Savinkin! #molluscmonday www.inaturalist.org/observations...
Janolus savinkini
Janolus savinkini from Ouémo, Nouméa, Nouvelle-Calédonie on January 17, 2021 at 09:28 AM by Johan Bas
www.inaturalist.org
May 11, 2026 at 3:21 PM
echinoblog.bsky.social
Janolus flavoanulatus- whose epithet I think means yellow ring-the colors on those pointy bits (yes there's a name for them-but I've forgotten it)! #molluscmonday www.inaturalist.org/observations...
Janolus flavoanulatus
Janolus flavoanulatus from Anilao, Batangas, Philippines on May 18, 2018 at 10:58 AM by Sylvain Le Bris
www.inaturalist.org
May 11, 2026 at 3:20 PM
echinoblog.bsky.social
Having a blah day? BOOM! Here's some Janolus (a nudibranch) from Wonder Reef in Australia! #molluscmonday www.inaturalist.org/observations...
Genus Janolus
Janolus from Wonder Reef on May 9, 2026 at 10:45 AM by Kelly-Anne Masterman
www.inaturalist.org
May 11, 2026 at 3:06 PM
moistmacro.bsky.social
It has been spotted in Okha, Gujarat. It has previously been misidentified as Janolus toyamaensis - which it is not

www.inaturalist.org/observations...
Genus Janolus
Janolus from Khorfakkan on April 12, 2013 by Stewart Clarke
www.inaturalist.org
August 27, 2025 at 10:05 AM
blauwtipje.bsky.social
Janolus hyalinus
Zeelandbrug, dijk & 1e pijler
Adrie Harink, 11/10/2019

website: https://www.blauwtipje.nl
find our Blauwtipje app on android and ios

#blauwtipje #nudibranch #janolus #MarineLife
September 11, 2025 at 10:00 AM
echinoblog.bsky.social
oooo! Lemony! Janolus from Sydney! #molluscmonday www.inaturalist.org/observations...
Genus Janolus
Janolus from Sydney NSW, Australia on November 11, 2023 at 09:07 AM by sarah-sydneydives
www.inaturalist.org
May 11, 2026 at 3:18 PM
blauwtipje.bsky.social
Janolus hyalinus
Veerweg, zuid/west, huisje, nabij vissteiger
Stefan Verheyen, 9/1/2016

website: https://www.blauwtipje.nl
find our Blauwtipje app on android and ios

#blauwtipje #nudibranch #janolus #MarineLife
July 13, 2025 at 10:00 AM
echinoblog.bsky.social
Janolus from New Caledonia! #molluscmonday www.inaturalist.org/observations...
Janolus flavoanulatus
Janolus flavoanulatus from Ouémo, Nouméa, Nouvelle-Calédonie on July 11, 2021 at 09:28 AM by Johan Bas
www.inaturalist.org
May 11, 2026 at 3:22 PM
lauramellinatelier.bsky.social
#sketchaday #artsky #blueskyart #art #mermay #nudibranchs

Another for MerMay, “Dreaming”.

The reference for this one was Janolus flavoanulatus. Reference photo by Richard Zerpe, via Wikipedia.

I’m okay with this NudiMer, but not delighted.
A mer-creature sitting on rocks by the ocean at night, staring at a full moon. They have a peach body with darker peach dots, and a purple and yellow ringed tail with purple tentacles at the end of their tail, and on their head. They are sitting facing left, on rock covered with kelp, with ocean all around them, the water splashing around the rocks. The full moon is hanging low over the ocean on the left side. This one is a riff on the nudibranch Janolus Flavoanulatus.
May 8, 2025 at 9:44 PM
doris-ffessm.bsky.social
C'est un #nudibranche peu coloré qui s'annonce, la janolus transparente. Présent dans l' #Atlantique Est et en #Méditerranée occidentale

COVES Jacques, GIRARD Pascal, ANDRÉ Frédéric in : #DORIS, 07/12/2025 :
Janolus hyalinus (Alder & Hancock, 1854), doris.ffessm.fr/ref/specie/3...

#biodiversite
December 7, 2025 at 10:31 PM
blauwtipje.bsky.social
Janolus hyalinus
Zeelandbrug, dijk, 1e & 2e pijler
Ton Klerks, 6/11/2017

website: https://www.blauwtipje.nl
find our Blauwtipje app on android and ios

#blauwtipje #nudibranch #janolus #MarineLife
August 23, 2025 at 10:00 AM