Chris Mah
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echinoblog.bsky.social
Chris Mah
@echinoblog.bsky.social
4.9K followers 810 following 3.4K posts
The "starfish guy"(but also a little about a lot of marine invertebrates, #echinoday #echinoderms. Kaiju, comics enthusiast. Marine scientist, taxonomist, deep-sea researcher. Statements/posts made here are my own & DO NOT REPRESENT HOST organizations
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echinoblog.bsky.social
Chris Mah @echinoblog.bsky.social · Nov 17
A recent account of my research in the NYT! by @megadarren.bsky.social ! #echinoday www.nytimes.com/2023/08/04/s...
New Antarctic Starfish Are Doting Parents and Vicious Predators (Published 2023)
A close examination of a collection of starfish in the Smithsonian revealed even more starfish inside those starfish.
www.nytimes.com
Reposted by Chris Mah
dilophosaurusbard.bsky.social
Merry #crustmas !

Here’s my last parasitic crustacean of the holiday season. Ommatokoita elongata is a copepod that attaches to the eyes of Greenland sharks. Though this usually blinds the shark, it doesn’t seem to harm it much since they live in deep, murky water where sight isn’t that useful.
December 25, 2025 at 9:01 PM
Reposted by Chris Mah
saimihanma.bsky.social
Some invertebrates I've encountered over the last month in Japan for #InverteFest
A model of Anomalocaris, an extinct invertebrate Close up of the underside of a sea star and the tiny tube feet A diorama of leaves and lots of insects A display of various bees
December 25, 2025 at 10:53 PM
Reposted by Chris Mah
nhmbryozoa.bsky.social
#FossilFriday Fine specimen of the problematical fossil Dickinsonia costata from the Ediacaran. On display at the South Australia Museum, Adelaide.
December 26, 2025 at 8:23 AM
Reposted by Chris Mah
saimihanma.bsky.social
For #InverteFest here's some spectacular octopus art I saw in Osaka.
The corner of a building at night lined with red and white japanese lanterns and in the front is a lit up yellow octopus A 3d octopus sign over a japanese restaurant A large octopus sculpture over a restaurant An octopus sculpture clinging to the side of a building
December 26, 2025 at 9:22 AM
Reposted by Chris Mah
mhedin.bsky.social
how about a little candy cane feather pede on this Christmas Day!
December 25, 2025 at 7:18 PM
echinoblog.bsky.social
Ha ha. Fine if you want to see more Christmassy Cuisine? Here's my ongoing effort to try and pan roast chestnuts! I never get them the way I want them.. but I don't get the chance that often! suggestions?
December 25, 2025 at 8:49 PM
Reposted by Chris Mah
k-hermit.com
🦀
December 25, 2025 at 9:38 AM
Reposted by Chris Mah
spidermax3000.bsky.social
Merry #crustmas!! Let #invertefest begin!
Wood louse - Order: Isopoda
#Millipede - Class: Diplopoda
(Shot near Cincinnati 3-14-25) 🦀🪲🪳 #photography #macrophotography #wildlifephotography #wildlife #nature #animal #invertebrate #crustacean #isopod
A wild isopod and a millipede sharing space on the sand and sort of forming a heart shape together
December 25, 2025 at 3:04 PM
Reposted by Chris Mah
franzanth.bsky.social
Have yourself a merry little Carboniferous.
#Art #SciArt #PaleoArt #Inverts
a pine tree with bugs hanging all around it. at the very top is a dragonfly-like meganeura with open wings, circling the base is the giant millipede arthropleura. on the branches sit various insects and circular pine cones.
December 20, 2024 at 4:24 PM
Reposted by Chris Mah
franzanth.bsky.social
Happy #InverteFest to everyone who celebrates. Post your invertebrate art.
franzanth.bsky.social franz @franzanth.bsky.social · Dec 20
Have yourself a merry little Carboniferous.
#Art #SciArt #PaleoArt #Inverts
a pine tree with bugs hanging all around it. at the very top is a dragonfly-like meganeura with open wings, circling the base is the giant millipede arthropleura. on the branches sit various insects and circular pine cones.
December 25, 2025 at 7:28 AM
Reposted by Chris Mah
jopabinia.bsky.social
So it's time for the literal #Crustmas themed crabs, to match my Hannukah and Halloween threads! (And to kick off #InverteFest I guess!) 🦑

Most obviously, the Christmas Island red crab, featured in this viral skeet

1/8
derek.bike spruce van tree @derek.bike · Nov 25
when we say we want more streets to be pedestrianized, this is what we mean
December 25, 2025 at 12:58 PM
echinoblog.bsky.social
Ha ha. You know what's good for Christmas breakfast? musubi! (spam sushi)!!
December 25, 2025 at 5:11 PM
echinoblog.bsky.social
Waking up to Christmas day, post #atmosphericriver storm! Wow. QUITE the bluster! Winds rattled and rolled the house I'm staying in!
clouds in distinct band over the Pacific on California horizon clouds in distinct band over the Pacific on California horizon clouds in distinct band over the Pacific on California horizon
December 25, 2025 at 5:10 PM
echinoblog.bsky.social
Wow! Quite a weird looking sea cucumber! and that's sayin' something for deep-sea sea cucumbers! #echinoday
squamiferum.bsky.social C. Chen @ Jamsteeeec @squamiferum.bsky.social · 9d
[New Paper] names Acanthotrochus verruciosseous, a new species of namako (holothurian) from >5000 m deep in the Aleutian Trench! We also present a high-resolution CT scan of the whole body, showing the ossicle distribution.

LINK to the paper in Bulletin of Marine Science: doi.org/10.5343/bms....
December 25, 2025 at 5:07 PM
Reposted by Chris Mah
squamiferum.bsky.social
[New Paper] names Acanthotrochus verruciosseous, a new species of namako (holothurian) from >5000 m deep in the Aleutian Trench! We also present a high-resolution CT scan of the whole body, showing the ossicle distribution.

LINK to the paper in Bulletin of Marine Science: doi.org/10.5343/bms....
December 16, 2025 at 7:54 PM
echinoblog.bsky.social
My Christmas gift to everyone? SEVEN new species and a new GENUS of starfish (Astrophylax!) from Papua New Guinea with these insane bivalve pedicellariae- and an overview of other species with same! OPEN ACCESS doi.org/10.11646/meg...
bottom surface of a starfish covered by numerous lip-like structures all along the edge around the mouth, which itself has many spines the relatively plain, white colored top surface of the same starfish Closeup of jaw/lip like structures on bottom surface
December 25, 2025 at 4:51 PM
Reposted by Chris Mah
premeemohamed.com
*squints at tree skirt*
franzanth.bsky.social franz @franzanth.bsky.social · Dec 20
Have yourself a merry little Carboniferous.
#Art #SciArt #PaleoArt #Inverts
a pine tree with bugs hanging all around it. at the very top is a dragonfly-like meganeura with open wings, circling the base is the giant millipede arthropleura. on the branches sit various insects and circular pine cones.
December 25, 2025 at 3:19 PM
Reposted by Chris Mah
dadrummond.art
Merry #Crustmas to all who celebrate! Hoping you are firmly attached to people you love, are able to scoop up large amounts of food, and can hide in an impervious shell when the social situation requires it ❤️
My sculpture of an acorn barnacle—a crustacean!—in steel, bronze, and sterling silver, sitting on a white background. My hand touches the steel barnacle shell and provides scale (barnacle is just a bit smaller than my hand). The barnacle’s filter feeding legs (cirri) are spread dramatically wide.
December 25, 2025 at 2:30 PM
Reposted by Chris Mah
livestreamocean.bsky.social
@Schmidt Ocean 🌊 dive 887 is live! #argentiniandeepseeps #CONICET #MarineLife
www.youtube.com/live/oFzzrl8...
Waypoint 11 - Colorado-Rawson Submarine Canyon Wall | SOI Divestream 887
YouTube video by Schmidt Ocean
www.youtube.com
December 25, 2025 at 4:33 PM
Reposted by Chris Mah
crabspromenade.bsky.social
Coenobita perlatus found in Christmas Island.
クリスマス島のサキシマオカヤドカリです。クリスマスカラーです💡
🦀🦑🧪
#crab #オカヤドカリ #coenobita #Crustmas
December 25, 2025 at 1:11 PM
Reposted by Chris Mah
flyingtrilobite.com
‘‘Tis the season.

Tra-la-la-lobe-ite, painted in ArtRage, like 17 years ago.

Merry Merry, everyone. 🐡🎨🧪
A trilobite painted in candy cane colours agains a dark blue snowy background. It’s an encrinurus, with knobs on its head painted to look like lights against the green cephalon (head). Quality of this image is kinda poor.
December 25, 2025 at 2:58 AM
Reposted by Chris Mah
tuexplorer1.bsky.social
They got the flag turned around. No they aren't leaving it. @Schmidt Ocean 🌊 dive 886 #argentiniandeepseeps #CONICET #MarineLife
December 25, 2025 at 3:11 AM
Reposted by Chris Mah
tuexplorer1.bsky.social
Bathydoris. @Schmidt Ocean 🌊 dive 886 #argentiniandeepseeps #CONICET #MarineLife
December 24, 2025 at 11:58 PM
Reposted by Chris Mah
tuexplorer1.bsky.social
Rossia! Disappointed they didn't zoom. They prob thought it was another one of the many octos they've been seeing. 😭 @Schmidt Ocean 🌊 dive 886 #argentiniandeepseeps #CONICET #MarineLife
December 25, 2025 at 12:01 AM
Reposted by Chris Mah
tuexplorer1.bsky.social
Kelp fallen from the surface, snails, ophiuroid. @Schmidt Ocean 🌊 dive 886 #argentiniandeepseeps #CONICET #MarineLife
December 25, 2025 at 12:21 AM