🦀 Crab Time 🦀

🚨 Exciting new crab preprint! A Japanese team found that sideways walking only evolved once! Maybe carcinization itself is necessary but not sufficient to go sideways? When it's lost, the species that go forward have alternate anti predation behaviors. 🧪🦑🦀 www.biorxiv.org/content/1….

www.biorxiv.org

Evolution of sideways locomotion in crabs

The evolutionary change in the mode of locomotion is often a major evolutionary event, triggering diversification. Sideways locomotion is a defining feature of true crabs (Brachyura) and may have cont...

Ligus

@greyauk.bsky.social

🦑 🦀 feed 😊

Veeloxxy Bites

@the-episiarch.bsky.social

🦀🦀🦀 CRABMAN 🦀🦀🦀 www.youtube.com/watch?v=b….

www.youtube.com

Homemade Armored Crabman Using Crabs 🦀♻️🙏

YouTube video by Minimaus Crafts

Jo Wolfe, PhD

@jopabinia.bsky.social

🦀🦑🧪

Susannah 🍁

@wweeta.bsky.social

Everything comes to an end sometime. I've run out of good hermit photos, so I'm pausing the Daily Hermit posts. Here's a GrainyHand, deciding whether it's safe to come out of the shell. He's halfway there. #VancouverIsland #HermitCrabs #IntertidalInvertebrates #Invertebrates #MarineLife #DailyHermit

A hermit crab in the palm of my hand; a little over the width of one finger. He's in a bluish shell, opening upward; he's holding both chelipeds in the opening and there's also one leg visible, up against the edge. The rest is hidden. GrainyHand hermits choose shells into which they can retreat completely, showing no sign of occupancy, so this one is already feeling more confident.
The chelipeds are brown, with closely-packed pale blue raised dots. On the outside of the shell, on the left, there's a limpet.

Jo Wolfe, PhD

@jopabinia.bsky.social

🦀

Jo Wolfe, PhD

@jopabinia.bsky.social

Added to crab feed 🦀

Jo Wolfe, PhD

@jopabinia.bsky.social

Added to (speculative in this case) crab feed 🦀

Jo Wolfe, PhD

@jopabinia.bsky.social

Added to crab feed, we love them too 🦀

でんか

@k-hermit.com

Tidepooling in Japan 🐚🦀

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Dr. Viktor Baranov🧪🦟🐛🪲

@swarmofthoughts.bsky.social

Hey @jopabinia.bsky.social - check out this marvelous wall relief at the entrance gates to the fishing port of A Coruña in northern Spain- culture of the city places quite a lot of importance on sea inverts 🦀 🐟🐙

Viktor points to the wall-tile relief of the marine invertebrate (crab, lobster, clam) at the wall of the fishing port of A Coruña, Spain

Coast of cap Finnestere in the fog, with Hercules tower lighthouse looming

Coryphoblennius galerita blenny next to the sea urchine

Lisa

@tuexplorer1.bsky.social

🦀 & snail from @schmidtocean.bsky.social dive 727 part 2 #chilemargin #MarineLife

Jo Wolfe, PhD

@jopabinia.bsky.social

Nice! 🦀

Zen Faulkes

@doctorzen.net

How ghost crabs 👻🦀 run so fast 🏃: At top speed, they push with their trailing legs (L if crab running R) like a vaulter's pole, leaping into the air! Their leading legs (R if crab running R) don't "step". They use those legs like skis 🎿, bouncing off the sand! doi.org/10.1242/jeb....

Crab running to right. Tips of left and right third legs dipped in paint. The left third leg leaves a distinct dot, while the right third leg, leaves a long smear, showing it is being used like a ski.

pikaole@pikaole.bsky.social

Ghost crab live on coasts all over the world but population is rapidly decreasing due to coastal development. Small size, but can run at very high speeds.

Jo Wolfe, PhD

@jopabinia.bsky.social

🦀

Jo Wolfe, PhD

@jopabinia.bsky.social

Added to crab feed 🦀

Jo Wolfe, PhD

@jopabinia.bsky.social

Added to crab feed 🦀

Jo Wolfe, PhD

@jopabinia.bsky.social

Added to crab feed 🦀

Jo Wolfe, PhD

@jopabinia.bsky.social

Added to crab feed 🦀 bsky.app/profile/did:...

Jo Wolfe, PhD

@jopabinia.bsky.social