September 8, 2025 at 10:38 AM
Some deep-sea snails reinforce their shells with iron sulfide. Not metaphorical armor. Literal metal. #MolluscMonday
January 20, 2026 at 4:23 PM
Some deep-sea snails reinforce their shells with iron sulfide. Not metaphorical armor. Literal metal. #MolluscMonday
November 25, 2024 at 3:19 PM
For #molluscmonday the the red-lined bubble snail (Bullina lineata). Although delicate looking, they are voracious predators on small worms.
February 16, 2026 at 5:12 PM
For #molluscmonday the the red-lined bubble snail (Bullina lineata). Although delicate looking, they are voracious predators on small worms.
#MolluscMonday Uncoiled ammonites known as heteromorphs (‘other shapes’) are mostly Cretaceous in age. However, this example of Spiroceras is from the Middle Jurassic of Dorset.
February 16, 2026 at 7:44 AM
#MolluscMonday Uncoiled ammonites known as heteromorphs (‘other shapes’) are mostly Cretaceous in age. However, this example of Spiroceras is from the Middle Jurassic of Dorset.
Yay! Congrats to Janet Voight at the Field who has described a new species of deep-sea octopus from the Galapagos! Microeledone galapagensis! #molluscmonday www.fieldmuseum.org/about/press/...
May 25, 2026 at 4:30 PM
Yay! Congrats to Janet Voight at the Field who has described a new species of deep-sea octopus from the Galapagos! Microeledone galapagensis! #molluscmonday www.fieldmuseum.org/about/press/...
#MolluscMonday Centre of another sectioned ammonite from the Middle Jurassic Inferior Oolite of England.
April 13, 2026 at 6:12 AM
#MolluscMonday Centre of another sectioned ammonite from the Middle Jurassic Inferior Oolite of England.
oh! Serrated land snail in the genus Priotrochatella by Adrian Gonzales #molluscmonday via www.reddit.com/r/awwnverts/...
April 7, 2025 at 4:22 PM
oh! Serrated land snail in the genus Priotrochatella by Adrian Gonzales #molluscmonday via www.reddit.com/r/awwnverts/...
#MolluscMonday Sectioned specimen of the ammonite Parkinsonia parkinsoni on display in the Enlightenment gallery at the British Museum. This Jurassic fossil was named for the great James Parkinson (1755–1824).
February 2, 2026 at 6:32 AM
#MolluscMonday Sectioned specimen of the ammonite Parkinsonia parkinsoni on display in the Enlightenment gallery at the British Museum. This Jurassic fossil was named for the great James Parkinson (1755–1824).
snailposting!
(a snail I met in Borneo)
(a snail I met in Borneo)
November 9, 2025 at 7:37 PM
Shipworms aren’t worms. They’re bivalves that eat wood with the help of symbiotic bacteria turning wooden shipwrecks into functioning ecosystems. #MolluscMonday Fantastic image from seahistory.org/sea-history-...
January 20, 2026 at 4:26 PM
Shipworms aren’t worms. They’re bivalves that eat wood with the help of symbiotic bacteria turning wooden shipwrecks into functioning ecosystems. #MolluscMonday Fantastic image from seahistory.org/sea-history-...
🐙 Say hello to Inopinoteuthis magna — the big-eyed jellyhead. 🐙
And yes, that common name does makes us suspect someone’s kiddo was in the lab that day! (Special thanks to @jeffday.bsky.social for sharing this species ID when we posted a different view of the animal.) #Doldrums 2,923 m
And yes, that common name does makes us suspect someone’s kiddo was in the lab that day! (Special thanks to @jeffday.bsky.social for sharing this species ID when we posted a different view of the animal.) #Doldrums 2,923 m
June 29, 2026 at 4:01 PM
#MolluscMonday Section of a particularly slender nerineid gastropod in a building stone at the Supreme Court, Adelaide.
December 8, 2025 at 8:00 AM
#MolluscMonday Section of a particularly slender nerineid gastropod in a building stone at the Supreme Court, Adelaide.
I love this so much!
At the inauguration, Justice Ketanji Brown Jackson wore a distinctive collar adorned with cowrie shells, which are believed to offer protection from evil in African traditions.
This choice mirrors the late Justice Ginsburg’s practice of using collars to convey a message.
At the inauguration, Justice Ketanji Brown Jackson wore a distinctive collar adorned with cowrie shells, which are believed to offer protection from evil in African traditions.
This choice mirrors the late Justice Ginsburg’s practice of using collars to convey a message.
January 21, 2025 at 4:37 AM
#MolluscMonday Ammonite and belemnite in the limestone steps leading up to Avignon Cathedral in France. Probably Early Cretaceous ‘Urgonian’.
November 30, 2025 at 8:47 PM
#MolluscMonday Ammonite and belemnite in the limestone steps leading up to Avignon Cathedral in France. Probably Early Cretaceous ‘Urgonian’.
#MolluscMonday: the wonderful ammonite lampposts of Lyme Regis.
June 30, 2025 at 6:23 AM
#MolluscMonday: the wonderful ammonite lampposts of Lyme Regis.
#MolluscMonday Two large heteromorph ammonites photographed over 20 years ago at a small museum in Bargemon, southern France. Unfortunately, details of identity, age and locality were not recorded.
January 12, 2026 at 7:54 AM
#MolluscMonday Two large heteromorph ammonites photographed over 20 years ago at a small museum in Bargemon, southern France. Unfortunately, details of identity, age and locality were not recorded.
#MolluscMonday Section of a fossil gastropod shell in a Bordeaux street paving stone. I believe this to be an acteonellid of Cretaceous age but would welcome feedback.
September 28, 2026 at 6:26 AM
#MolluscMonday Section of a fossil gastropod shell in a Bordeaux street paving stone. I believe this to be an acteonellid of Cretaceous age but would welcome feedback.
Finally got around to making Raup's mollusk shell model work in R. Also spent too much time trying to give a retro look. #marinelife #molluscmonday
September 29, 2026 at 6:57 PM
Finally got around to making Raup's mollusk shell model work in R. Also spent too much time trying to give a retro look. #marinelife #molluscmonday
#MolluscMonday This sectioned nautiloid shows the siphuncle bisecting the chambers. Cenoceras pseudolineatus from the Middle Jurassic of Dorset, England.
March 16, 2026 at 7:24 AM
#MolluscMonday This sectioned nautiloid shows the siphuncle bisecting the chambers. Cenoceras pseudolineatus from the Middle Jurassic of Dorset, England.
#MolluscMonday Neither nautiloid nor ammonite, this is an early ammonoid, Timanites keyserlingi (Order Agoniatitida) of Devonian age. The large body chamber in this specimen is sediment-filled, whereas the chambers forming the phragmocone are infilled with calcite.
January 19, 2026 at 7:56 AM
#MolluscMonday Neither nautiloid nor ammonite, this is an early ammonoid, Timanites keyserlingi (Order Agoniatitida) of Devonian age. The large body chamber in this specimen is sediment-filled, whereas the chambers forming the phragmocone are infilled with calcite.
Moroteuthopsis longimana, 1207 m, #SouthSandwichIslands w/@oceancensus.bsky.social - The 35-day deep-sea expedition team observed thriving polar ecosystems, discovered new hydrothermal vents, coral gardens & many suspected new species. Read full post on Instagram: www.instagram.com/reel/DMIljx4...
March 2, 2026 at 7:57 PM
Float like a glass squid.
What might it feel like to reach a state where your body’s density perfectly matches your surroundings? Their buoyant bodies are filled with ammonium chloride, which is lighter than seawater, helping them to conserve energy while traveling. 1,729 m #ArgentinianDeepSeeps
What might it feel like to reach a state where your body’s density perfectly matches your surroundings? Their buoyant bodies are filled with ammonium chloride, which is lighter than seawater, helping them to conserve energy while traveling. 1,729 m #ArgentinianDeepSeeps
March 2, 2026 at 7:55 PM
January 19, 2026 at 1:08 PM