Chris Mah

@echinoblog.bsky.social

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

@mbarinews.bsky.socialReposted by @echinoblog.bsky.social

Arms up if you love octopuses! 🐙🙋 #WorldOctopusDay⁠
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Deep-sea organisms use a variety of ways to swim. Most cephalopods, like this gliding Benthoctopus sp., have the ability to move by jet propulsion. This one was observed pulsing its arms and jetting gracefully through the water.

@numenini.bsky.socialReposted by @echinoblog.bsky.social

Especially on the subaqua branches of the bankside Willows, & sheet pilings in their shade, spectacular growths of Freshwater Sponges (Spongillidae). Here in the lower River Little Ouse, where the flow is slow, it needs these finger like growths to 📈 surface area for filter feeding. #SpongeThursday

@coralmorphologic.bsky.socialReposted by @echinoblog.bsky.social

The brain coral emerging at low tide from the water in this photo is what we termed an ‘urban coral.’ That is a coral that has naturally recruited onto human-made shorelines, seawalls, and artificial reefs 🪸

@mbarinews.bsky.socialReposted by @echinoblog.bsky.social

A neighborly sort of coral 🪸💕⁠ ⁠ The mushroom soft coral (Heteropolypus ritteri) is one of the most common animals we see in the depths off the central coast of California. They are abundant on the jagged walls of Monterey Canyon and the rocky slopes of local seamounts.

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