Jeff Day

Zoom on the eye

this is a weird one. discussing with a few folks and current theory is that this is batoteuthis skolops, a really obscure chiroteuthid from antarctic and subantarctic waters, notable for having strange tentacle clubs (missing in this individual) and a very long, tapered mantle fin

Enoploteuthid from @schmidtocean.bsky.social dive 864 #asgardarchaea #MarineLife

Mastigoteuthid from @schmidtocean.bsky.social dive 864 #asgardarchaea #MarineLife

Enoploteuthid on the descent from @schmidtocean.bsky.social dive 866 #asgardarchaea #MarineLife

Mastigoteuthis @schmidtocean.bsky.social dive 867 #asgardarchaea #MarineLife

Enteropneusta & Bathysaurus @schmidtocean.bsky.social dive 867 #asgardarchaea #MarineLife

tell him to put some fucking pants on, for starters

This work on benthic ctenophore systematics (creation of Benthoplanidae) sets up a few planned works, focused on the systematics and evolution of shallow and deep water groups. www.marinespecies.org/aphia.php?p=...

Benthoplanidae, a new family of benthic ctenophores (Platyctenida), based on morphological and genetic data The benthic ctenophore Benthoplana meteoris (adults left and bottom, planktonic juveniles to the top right), type species for the genus, which in turn is type for the newly erected family: Benthoplan....

As part of his dissertation, @beziostudio.bsky.social leads a recent paper on benthic ctenophores. New family established based on anatomical observations, mitochondrial genome structure, and sequence data. onlinelibrary.wiley.com/doi/10.1111/...

<i>Cymbasoma</i> sp. Floating amidst the ocean's plankton is a tiny monster, it has no mouth and it must mate, after which it will give birth to a new generation...

I've written a post about a tiny monster, a copepod which is monstrous by name and by nature.
It has no mouth and it must mate. As a juvenile, it lives in the body of a worm, and when it reaches adulthood, it pops out like a tiny xenomorph.
#Invertebrate 🧪
dailyparasite.blogspot.com/2025/11/cymb...

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During a 2021 expedition, scientists explored an offshore dumpsite, where barrels of toxic byproducts of the insecticide DDT were dumped between 1947 & 1972. Join us for a discussion w/ expedition scientists. Register now: https://schmidtocean-org.zoom.us/webinar/register/WN_bGCuKTmDSrGydYHaoYFbuw

Schematic of two potential impact pathways (direct benthic impacts and midwater impacts) of deep-sea mining for polymetallic nodules, polymetallic sulphides, and cobalt-rich ferromanganese crusts.

"Deep-sea mining risks for sharks, rays, and chimaeras" www.cell.com/current-biol...

@seaprinceaaron.bsky.social & colleagues
@currentbiology.bsky.social

whalefall / life seeks to perpetuate 2

Well now, would you look at that?

A massive, 26-YEAR-LONG study of MORE THAN 2.4 MILLION people in Sweden found found NO EVIDENCE to support a causal link between acetaminophen (the API in Tylenol) use during pregnancy and increased risk of autism, ADHD, OR intellectual disability in children.

…true that’s a pretty important distinction!

suddenly very glad i follow the nuclear proliferation folks like martin:

"Juror excused due to Alf"

Multiple giant oar fish swimming towards the surface of the ocean. There is a tiny diver near the middle one.

Pelagic Respite

ahhhhh i'm glad y'all got to meet!!

For a 3rd year, I made a carcinization pumpkin. But this time it's a true crab, Calappa! 🦀🦑🧪

(It's a view of the "shame face", not the dorsal body)

If your city is really lucky, you’ll get a weird girl who goes above & beyond to celebrate squid.

Maybe she has a Squidmobile & glues 🦑 on poles. Maybe she gets on stage to sing about squid, dressed as a 🦑.

Philadelphia & Tokyo are both lucky.

Extremely cool to meet my Tokyo counterpart today ☺️

🎃 Looking for some last-minute Halloween costume inspo?

Look no further, here are FOUR Steal the Looks: Bay-Delta Edition! Which one are you dressing up as this halloween? 🌿

#stealthelook #baydelta #halloweencostumeidea #chinooksalmon #sandhillcrane #riparianwoodrat #deltasmelt

Brittle star swimming! Love this movement.

i've only gotten to this point thanks to the many cephalopod scientists such as @sarahmackattack.bsky.social, who have been beyond generous with their time and expertise.

Kat standing regally at the podium in front of her slide of a deep sea squid titled “deep-sea cephalopod observations from Schmidt ocean institute’s first Antarctic field season”

Screaming inside with joy seeing @jeffday.bsky.social on the slide at the cephalopod international advisory council meeting this morning.

“He is massively accelerating our ability to monitor cephalopods in the deep sea”- Kat Bolstad

Jeff started his work on cephalopods here on social media 😭

@jeffday.bsky.social on a CIAC talk!!!!! Im beaming with pride

Artificial Intelligence supercharges science on the Antarctic seafloor - British Antarctic Survey Using the latest AI technology, scientists have dramatically sped up the process of detecting animals found in photographs and video taken of the seafloor.

🌟 ‘Automated Detection of Antarctic Benthic Organisms to Aid Biodiversity Monitoring’ is by Cameron Trotter, Huw Griffiths, Tasnuva Ming Khan + Rowan Whittle.

It was published at the Joint Workshop on Marine Vision, at the International Conference on Computer Vision ⬇️

www.bas.ac.uk/media-post/a...

Trophic ecology of squids in the Benguela Upwelling System elucidated by combining stomach content, stable isotope and fatty acid analyses - Marine Biology Squids occur worldwide in marine ecosystems and play a major role in pelagic food webs by connecting lower and higher trophic levels. Their high feeding intensities and pronounced diel vertical migrat...

Trophic ecology of squids in the Benguela Upwelling System elucidated by combining stomach content, stable isotope and fatty acid analyses
🌊🧪🦑

link.springer.com/article/10.1...