Horseshoe crabs

What’s great about Xiphosura

In the last few years I’ve moved more and more towards theming my general online presence around horseshoe crabs. There’s a general reason for that, and to properly honour horseshoe crabs for what they are, it deserves to be explained.

First, we have to start at the beginning. Or, the best we lesser specimens can know of the beginning. Back around the late Ordovician, at least 445 million years ago[1], there was a chelicerate currently called Lunataspis, which looked something like this:

stippled drawing of an animal with a flat, round body and narrow tail

Reconstruction of external exoskeletal morphology of Lunataspis aurora. Figure 5 from [Rudkin2008].

Fast forward 445 …

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Limulus lotus

It’s no secret that I like and respect horseshoe crabs – for reasons that deserve to elaborated on some time. So when someone shared this CRABTCHA, I had no choice but to respond “Front and centre where it belongs 🧘‍♂️”

Happy World Ocean Day now prove you are not a robot.

(This CRABTCHA is brought to you by @jopabinia.bsky.social and yours truly.)

spoof captcha telling people to click on images containing crabs, but the images are of various true crabs and false crabs

franz

To which came the response “I'd like to see a horseshoe crab attempt a lotus position.”

Well, challenge accepted.

A horseshoe crab on a sandy surface, with its body upright. Unless someone told you, you wouldn’t notice the lowest pair of legs are crossed.

2022 inktober roundup

Inktober is a thing where anyone interested attempts to make an ink drawing every day of October, or at least a once a week, or anything else in line with the main goal of making good habits. I’m more of the pixeling persuasion, so this year I did indeed produce an assortment of monochromatic pixels for all 31 days, using the Official set of prompts. Observe, should you desire.

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