Snails In The Genus Julia have A Bivalved Shell, Like A Clam!

Going into 2024 like… 🦀 🖤 😞

Digital illustration of an indigenous man with two braids wearing a jean jacket. There's text that reads, 'Columbus didn't discover anything.'

Made by Sea-Blog

I met some relatives of my beloved leatherleaf slugs in the mangroves of Singapore, the onch slugs! they’re perhaps some of the slowest-moving animals I’ve ever encountered; this is one in a hurry:

the species pictured is a Platevindex, which are particularly interesting to me since their backs are studded with extra eyes! the dorsal papillae each have a little black dot that’s a photoreceptor, which helps the slug detect changes in light exposure.

onchidiids are marine animals, living on costal rocks and in mangroves, but breathe air and spend much of their time out of the water. like the leatherleafs, they’ve got a dry, tough hide that maintains water balance, but Platevindex takes that to an extreme—when I picked one up, it felt like a vulcanized rubber tire!

I thought this feisty little critter was an isopod until I got a closer look. This is a carrion beetle larva, and, as their name suggests, adults and larvae of this insect eat dead animals, maggots that live in carrion, and/or other types of decaying organic matter. I have no idea where this one came from, since there were no dead animals nearby or compost. Perhaps an insectivorous bird dropped it, or maybe this particular species likes chicken manure (there was a chicken tractor nearby vroom vroom). Putting this next part below the cut because it's a little gross. Proceed with caution:

This carrion beetle child seemed somewhat hungry, as it was nibbling at some dead skin around my finger nail. It tickled a bit and reminded me of the shrimp they sometimes have at aquariums that will nibble at your fingers. Yes that's a thing.

unidentified Silphidae larva Northeastern Pennsylvania, US

ScienceAlert

Wild Elephants Invent Names For One Another in Surprise Sign of Abstract Thinking

Elephants call out to each other using individual names that they invent for their fellow pachyderms, a study said on Monday.

Elephants call out to each other using individual names that they invent for their fellow pachyderms, a study said on Monday. While dolphins and parrots have been observed addressing each other by mimicking the sound of others from their species, elephants are the first non-human animals known to use names that do not involve imitation, the researchers suggested. For the new study, a team of international researchers used an artificial intelligence algorithm to analyse the calls of two wild herds of African savannah elephants in Kenya. The research "not only shows that elephants use specific vocalisations for each individual, but that they recognise and react to a call addressed to them while ignoring those addressed to others," lead study author Michael Pardo said. "This indicates that elephants can determine whether a call was intended for them just by hearing the call, even when out of its original context," the behavioural ecologist at Colorado State University said in a statement.

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