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May 7, 2025

The OctoPost: Babies, Baroque, and Kidney Worms

Cephalopod News

Here’s the cephalopod video everyone is talking about: Colossal Squid, 1st Live Observation. It’s a beautiful baby of one of the largest squid species (colossal squid are the heaviest; giant squid are the longest). I highly recommend watching the whole thing—it's only a minute and a half, with an excellent pun at 1:02 which I have confirmed with the narrator was intentional.

Here’s the other cephalopod video everyone should also be talking about: More Oncocerida from Gotland. Oncocerids are a group of long-extinct shelled cephalopods, and although their shells were cute round blorps, the real mind-boggler was the shape of their shell openings. Please, please, watch the video to see how talented paleoartist Kiabugboy reconstructed them.

A still image from the video "More Oncocerida from Gotland" showing a color reconstruction of an early cephalopod shell. It is about 12 cm long, with a pleasing rounded pyramid shape, and a very strange shell opening with lots of loops and curves.
This video still shows a rendering of an ancient cephalopod shell by Kiabugboy.

Baroque, four million years before Bernini.

My News

Tomorrow! May 7, 3:45pm PT/6:45pm ET: I’ll be talking about "The Hidden World of Baby Animals" with Smithsonian Associates (online, tickets here). Come celebrate babies of all kinds—the cute, the creepy, and the crucial!

Interview: I enjoyed sharing behind-the-scenes research from my book The Lady and the Octopus for an interview in the blog From the Mixed-Up Files of Middle Grade Authors.

Shop: With Mother’s Day around the corner, I’ll note that my store offers a variety of thematic cards that convey truly unique sentiments.

Picture of a greeting card with a colorful drawing of a purple caecilian with three small pink caecilians biting her skin off. The text reads, "Some caecilians (legless amphibians) lay eggs, others get pregnant, and a few species grow an extra-thick 'milk skin' for their babies to peel off their their teeth."

Funny Pages

Did you know there’s an entire phylum of worms that live in cephalopod kidneys and nowhere else? These animals, called dicyemids, have fascinated me since I first learned about them in college. At one point I thought I might even study them for my PhD. I didn’t, but I did co-author a chapter about them in the Light and Smith Manual. And now, thanks to a nudge from magnificent crab scientist Jo Wolfe, I’ve begun drawing an informational comic about them! So far I’ve only finished the title art, but future panels will feature many nigh-unbelievable details of these worms’ lives…

Outlined in pen and inexpertly colored with alcohol markers, this square drawing contains the title text "DICYEMIDS a.k.a. octopus pee worms" above a cartoon of three fish yelling "EWW" at an octopus, who smugly responds, "You're all jealous that you don't have your own private parasitic phylum." Inside the mantle (body) of the octopus, its kidney is labelled, and a zoomed-out view from inside the kidney shows three strange blorpy wiggly worm things. (They are dicyemids.)
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Join the discussion:
Kalen Knowles
May. 9, 2025, evening

Not sure how interested you are in fantasy cephalopods but I just became aware of the Nu Udra from the video game Monster Hunter (https://www.youtube.com/watch?v=KabLL9DB-9g). While I'm not a fan of the premise of the game which seems to be "go into an animal's territory and kill it", I am a fan of the design of this creature and its life-like tentacle animations, and thought maybe you'd get a kick out of it too! Though, be prepared for the narrator to repeatedly refer to it as a "squid" when clearly it's more octopus in design :eyeroll:

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