#HALGERDA
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joegarrity.bsky.social
This Halgerda carlsoni nudibranch is quite the eye pleaser. I spotted this beauty on our local dive reef, Shitiping, in Hualien, Taiwan. 😍

#marinelife #wildlifephotography #wildlife #naturephotography #nature #nudibranch #scuba #eastcoastkin #photography
March 19, 2026 at 1:12 PM
rachelquinlan.bsky.social
#Nudivember day 30 - Halgerda okinawa
#SciArt

The last one!
November 30, 2024 at 8:50 PM
rachelquinlan.bsky.social
#Nudivember day 20 - Halgerda albocristata
#SciArt
November 20, 2024 at 5:07 PM
tssumis.bsky.social
Halgerda tessellata
Similan islands, Jan 2025

#seaslug #nudibranch #marinelife
#underwaterphotography
January 18, 2025 at 3:06 PM
headinthestars02.bsky.social
day 20, halgerda albocristata! it's so geometric, i love it <3
#nudivember
November 20, 2024 at 6:16 PM
moistmacro.bsky.social
So no Halgerda okinawa for me - but instead I have Halgerda willeyi for the last day of #Nudivember
This #Nudibranch was from Anilao in the Philippines. Tomorrow starts the #25DaysofCrustmas I believe.
#MarineLife #Inverts
A photograph of a sea slug that has a white background body temperature with black and yellow stripes running between elevated ridges and points.
November 30, 2024 at 2:27 PM
nudibranch.bsky.social
Halgerda albocristata is today's #Nudivember species, a nudibranch that's living everyone's wildest fashion choices. Not only does it have wild markings, the body itself has angled ridges typical of this genus.

It's found on reefs from Japan to Australia.

www.inaturalist.org/observations...
Halgerda albocristata
Halgerda albocristata from Kwajalein Atoll, RMI, K9 pinnacle on February 19, 2013 by uwkwaj. Under rock, depth about 7m
www.inaturalist.org
November 20, 2024 at 4:44 PM
nudibranch.bsky.social
Our final #Nudivember species is Halgerda okinawa, a nudibranch found from Okinawa south to the Philippines. In this case, beauty isn't skin deep because the yellow pigment goes down into the tissue, which is unique to this particular species.

www.inaturalist.org/observations...
Halgerda okinawa
Halgerda okinawa from Off Mabul Island, Malaysia on November 30, 2017 at 08:43 AM by Albert Kang
www.inaturalist.org
November 30, 2024 at 5:13 PM
saimihanma.bsky.social
Today's #Nudivember is Halgerda theobroma.

#TradArt
A watercolor illustration of a nudibranch sea slug which is brownish with orange lines and spots, white and brown rhinophores and gills.
November 3, 2025 at 11:24 PM
nudibranch.bsky.social
It's day 3 of #Nudivember and our species today is Halgerda theobroma, found only off the coast of Western Australia.

Info: www.seaslugforum.net/find/halgtheo
Photos: www.inaturalist.org/observations...
November 3, 2025 at 1:30 PM
ketrinadrawsalot.bsky.social
#Nudivember day 3: Halgerda theobroma, the forbidden cheesy baked potato
#nudibranch #seaslug #art
A brown dorid nudibranch with long yellow spots
November 3, 2025 at 8:50 PM
cactusmaudiiix.myatproto.social
#nudivember #3

Halgerda Theobroma.

I tried something else ! 😅
Dessin d une Nudibranch qui ressemble à un steak frite avec de la salade et des piment Il y a écrit : Nudibranch Halgerda theobRoma
November 3, 2025 at 7:06 PM
terumbudivers.com
Nudibranch Halgerda batangas
#gili #giliislands #lombok #diving #scuba #trawangan #diveandstay #giliair #pets #ocean #sealife #marinelife #padi #seaslug #nudibranch
December 9, 2025 at 9:55 PM
inaturalist.bsky.social
Sea slugs never fail to impress. (You're currently looking at the species Halgerda malesso!)

📷 mikejdo on iNaturalist
📍 Mariana Islands
🔗: www.inaturalist.org/observations...
#ObservationOfTheDay
A white sea slug with yellow branching patterning and yellow spots. It also has brown-spotted rhinophores.
October 28, 2025 at 3:02 PM
liminalitea.bsky.social
Today's #nudivember is Halgerda theobroma, a delightful splodge.
A drawing of a white sea slug with clustered brown speckles and yellow stripes.
November 3, 2025 at 6:53 PM
nudibranch.bsky.social
Our next to last #Nudivember species is Halgerda brycei

Info: www.seaslugforum.net/showall/halg...
More info: slugsite.us/bow/nudwk289...
Photos: nudipixel.net/photo/00012629
museum.wa.gov.au/online-colle...
November 29, 2025 at 6:20 PM
terumbudivers.com
Nudibranch Halgerda batangas
#gili #giliislands #lombok #diving #scuba #trawangan #diveandstay #giliair #pets #ocean #sealife #marinelife #padi #seaslug #nudibranch
December 1, 2025 at 2:10 AM
terumbudivers.com
Nudibranch Halgerda batangas
#gili #giliislands #lombok #diving #scuba #trawangan #diveandstay #giliair #pets #ocean #sealife #marinelife #padi #seaslug #nudibranch
November 13, 2025 at 2:10 AM
terumbudivers.com
Nudibranch Halgerda batangas
#gili #giliislands #lombok #diving #scuba #trawangan #diveandstay #giliair #pets #ocean #sealife #marinelife #padi #seaslug #nudibranch
February 20, 2026 at 1:58 AM
ketrinadrawsalot.bsky.social
#Nudivember day 29: Halgerda brycei, the forbidden pineberry
#nudibranch #seaslug #bumpy #art #SciArt
A white nudibranch covered in orange-tipped papillae and sporting black gills and rhinophores
November 30, 2025 at 5:18 AM
nudibranc.bsky.social
One of my favourites too, this one spotted off Palawan, Philippines
#Nudivember #nudibranch
Halgerda batangas nudibranch
November 20, 2024 at 9:18 PM
megugu.bsky.social
Ink commission for someone who asked a sea slug, I chose to draw a Halgerda tessellata. It was quite challenging but damn these creatures are so cute. ♥

I used black ink and bleach.

#traditionalart #ink #commission
February 27, 2025 at 3:51 PM
terumbudivers.com
Reticulidia halgerda, a nudibranch
#gili #giliislands #lombok #diving #scuba #trawangan #diveandstay #giliair #pets #ocean #sealife #marinelife #padi #seaslug #nudibranch #Reticulidia
July 11, 2025 at 10:02 AM
terumbudivers.com
Nudibranch Halgerda batangas
#gili #giliislands #lombok #diving #scuba #trawangan #diveandstay #giliair #pets #ocean #sealife #marinelife #padi #seaslug #nudibranch
January 11, 2026 at 8:44 PM
terumbudivers.com
Nudibranch Halgerda batangas
#gili #giliislands #lombok #diving #scuba #trawangan #diveandstay #giliair #pets #ocean #sealife #marinelife #padi #seaslug #nudibranch
December 25, 2025 at 9:55 PM