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blauwtipje.bsky.social
Onchidoris bilamellata
Zeelandbrug, dijk & 1e pijler
Theo vd Kamp, 19/12/2015

website: https://www.blauwtipje.nl
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#blauwtipje #nudibranch #onchidoris #MarineLife
Onchidoris bilamellata
August 23, 2026 at 9:34 AM
blauwtipje.bsky.social
Onchidoris bilamellata
Zeelandbrug, dijk & 1e pijler
Stefan Verheyen, 10/01/2017

website: https://www.blauwtipje.nl
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#blauwtipje #nudibranch #onchidoris #MarineLife
Onchidoris bilamellata
May 19, 2026 at 8:41 PM
blauwtipje.bsky.social
Onchidoris bilamellata
Rif Nieuwe kerkweg
eduard bello, 1/26/2021

website: https://www.blauwtipje.nl
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#blauwtipje #nudibranch #onchidoris #MarineLife
Onchidoris bilamellata
April 2, 2026 at 10:00 AM
sharkeee.bsky.social
A couple of super cool finds by a member of our monthly #rockpoolproject #bioblitz today.
Kilve beach on the #Quantockhills was the location and way out on the low water mark, a nudibranch named, Fuzzy Onchidoris - Onchidoris muricata and a stunning Rose sun star - Crossaster papposus wowed us.
A photo of a tiny white nudibranch (type of sea slug) on a the silty floor of a rockpool. It's main features are the many short blunt blobs covering it. A photo of an orange coloured starfish laying on a rock. The angle of the photo makes this creature appear as a hand with two thumbs and four fingers wearing a prickly textured glove. This starfish has twelve arms in total, the other six arms are just about showing in the background.
March 21, 2026 at 8:30 PM
blauwtipje.bsky.social
Onchidoris bilamellata
Veerweg, noord/oost, einde Veerweg
Marleen de Waal Malefijt, 4/29/2017

website: https://www.blauwtipje.nl
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#blauwtipje #nudibranch #onchidoris #MarineLife
Onchidoris bilamellata
February 28, 2026 at 10:00 AM
blauwtipje.bsky.social
Onchidoris bilamellata
Oostpiertje op west.hav.hfd, Starttoren, wrakje
Boy Van de werken, 12/29/2020

website: https://www.blauwtipje.nl
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#blauwtipje #nudibranch #onchidoris #MarineLife
Onchidoris bilamellata
February 21, 2026 at 10:00 AM
asturnatura.bsky.social
onchidoris
Nudibranquio de pequeño tamaño pendiente de identificar
dlvr.it
January 15, 2026 at 7:45 PM
blauwtipje.bsky.social
Onchidoris bilamellata
Zeelandbrug, dijk & 1e pijler
Stefan Verheyen, 1/22/2016

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

#blauwtipje #nudibranch #onchidoris #MarineLife
August 13, 2025 at 10:00 AM
bedupolker.bsky.social
Action-packed life or death chase between barnacles and their natural predator, the horrid dorid (Onchidoris bilamellata)
August 6, 2025 at 4:01 PM
blauwtipje.bsky.social
Onchidoris bilamellata
Veerweg, zuid/west, huisje, nabij vissteiger
Stefan Verheyen, 3/8/2016

website: https://www.blauwtipje.nl
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#blauwtipje #nudibranch #onchidoris #MarineLife
July 27, 2025 at 10:00 AM
briangweber.com
Bonus critters!

#underwaterphotography #diving #macrophotography #underwater #olympus #underwaterworld #nudibranchs #crabs #nudibranchs 🦑 📷
Green urchin with a stately mussel shell hat adorned with a tiny snail Placida dendritica slug on a piece of sea fleece. This thing is tiny! A pair of Onchidoris bilamellata working on the next generation of Onchidoris bilamellata nudibranchs.
June 10, 2025 at 11:01 AM
briangweber.com
Nasty surface conditions and bad viz at Fort Constitution, New Hampshire. Lots of Onchidoris bilamellata, Dendronotus frondosus, tiny sculpin, Tenellia gymnota, Cuthonella concinna, you name it.

#underwaterPhotography #macrophotography #nudibranchs #fish #NewEngland #NewHampshire #photography 🦑 📷
Onchidoris bilamellata crawling through the weeds Coryphella verrucosa next to a large ribbon of Onchidoris bilamellata eggs with a skinny spiral of other nudi eggs on it A tiny sculpin among the barnacles A pair of Onchidoris bilamellata in a spiral of eggs
May 25, 2025 at 10:30 AM
thescubanewsca.bsky.social
Barnacle Eating Onchidoris Nudibranch

📸 Wayne T Joy
📍 Under the Pier in Lower Prospect, Nova Scotia, #Canada 🇨🇦

Excellent picture Wayne, thanks for sharing 🤿 👌
May 9, 2025 at 7:03 AM
saimihanma.bsky.social
Species #11 were Barnacle-eating Dorids (Onchidoris bilamellata), which unfortunately were out of the water so this was the best shot I got of them.

#Invertebrates
a post with acorn barnacles and on top are three brown blobs, they look much cooler underwater
May 5, 2025 at 10:07 PM
briangweber.com
Barnacle-eating nudibranchs were EVERYWHERE at the UNH Research Pier in New Castle, NH. My gloves were leaking, so my hands were very cold (41F 🥶 ) but this was a nice dive!

#nudibranchs #underwaterPhotography #photography #NewEngland #coldWater #macroPhotography #olympus #scubaDiving 🦑 📷
Onchidoris bilamellata, or barnacle-eating nudibranch moving across a rock surrounded by barnacles. This individual is brown, but they come in white or tan color variations as well. A pair of Onchidoris bilamellata, or barnacle-eating nudibranch moving across a rock surrounded by barnacles. This is a brown color variant and tan color variant side by side. Doris pseudoargus, otherwise known as a sea lemon nudibranch. For some reason, the individuals at this site frequently have a pink tint to them.
April 16, 2025 at 11:36 AM
briangweber.com
Some images from a dive at Folly Cove in late March. My favorite find was a large mysis shrimp I followed for a bit and managed to photograph in the water column. Nice dive!

#underwaterPhotography #photography #scubaDiving #diving #nudibranchs #shrimp #NewEngland #coldWater #macroPhotography 🦑 📷
A mysis shrimp floating in the water column Onchidoris muricata deep in the weeds A threeline mudsnail in the snoot spotlight Acanthodoris pilosa crawling through the weeds
April 14, 2025 at 10:51 AM
briangweber.com
Some images from another excellent dive at Peirce Island in Portsmouth, New Hampshire in mid-March.

#scubaDiving #diving #underwaterPhotography #photography #coldWater #NewEngland #nudibranchs #fish #olympus 🦑 📷
A small lumpfish peeks out from behind some seaweed. This is the first time I have spotted a lumpfish at this site. An egg cluster from Onchidoris bilamellata, commonly known as a barnacle-eating nudibranch A small Ancula gibbosa nudibranch in the seaweed against a black background A massive Flabellina sp. in an orange coloration. This creature was probably 4 inches long!
April 8, 2025 at 3:30 PM
briangweber.com
Some images from a dive at the Fort Constitution Pier in New Castle, New Hampshire back in mid-March.

#nudibranch #NewEngland #scubaDiving #NewHampshire #underwaterPhotography #photography #anemone #coldWater #diving 📷 🦑
Ancula gibbosa nudibranch floating in the water column. The nudibranch is semi-transparent with frilly gills exposed and surrounded by pointy cerrata. Eight Onchidoris bilamellata nudibranch (also known as barnacle-eating nudibranchs) in a cluster with a white ribbon of eggs. A pair of sea lemon nudibranchs facing opposite directions in the middle of mating. The nudibranchs are mottled yellow with some pink. Some sort of larval critter in the water column. From the look of it, I guess it is some sort of shrimp.
April 7, 2025 at 8:48 AM
sewbrec.org.uk
#RecordOfTheWeek is a fabulous sea slug, Barnacle-eating Doris (Onchidoris bilamellata), spotted in Penarth by Wynn Griffiths.

This is the first record for Penarth, and the most easterly record for south Wales!

Many thanks for the record & photos, submitted via iRecord irecord.org.uk.
April 4, 2025 at 12:51 PM
supersequin.bsky.social
Seek and ye shall find! Working on a hunch after finding egg ribbons yesterday, I revisited the same site at low tide today and found these lovely Barnacle-eating Dorids (Onchidoris bilamellata). #seaslug #nudibranch #rookpooling #uknature #marinelife @sewbrec.org.uk
Cream and brown sea slug amongst muddy rocks. Cream and brown sea slug amongst muddy rocks. View from the side, with the head to the right. Cream and brown sea slug amongst muddy rocks. View looking down from above with the head towards the bottom of the image.
April 1, 2025 at 5:00 PM
shadgeek.bsky.social
It’s that time of the year for Onchidoris bilamellata to start laying their eggs, which are the squiggly and squishy white things next to some of these guys. It’s such a treat seeing these guys!! And to only think I saw my first one in my twenty-two years of being on this beach just last week 🦑
March 4, 2025 at 8:22 PM
shadgeek.bsky.social
It’s time for a tunicate takeover!! Was exploring the beach today and came across a colorful array of these colonial critters. I’m not that confident on IDs for these, so if anyone has good ones, I’m all ears!! Going to be posting some Onchidoris bilamellata next!! 🦑
March 4, 2025 at 8:19 PM
wildlife-diary.bsky.social
Found this little sea slug at Port of Ness beach today. Kindly identified for me by a fellow member of Curracag, the Outer Hebrides Natural History Society

Meet Onchidoris bilamellata, aka dusky Doris

#MarIneLife #Seaslug #Nudibranch
February 28, 2025 at 6:42 PM
shadgeek.bsky.social
Was working again at the beach last night and saw a happy little Onchidoris bilamellata and its eggs with the oysters. Plus some bonus Nucella lapillus and their eggs!! 🦑
February 27, 2025 at 4:25 PM
blauwtipje.bsky.social
Onchidoris bilamellata
Rif Nieuwe kerkweg
eduard bello, 1/26/2021

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

#blauwtipje #nudibranch #onchidoris #MarineLife
February 17, 2025 at 10:00 AM