Jeff Day
@jeffday.bsky.social
i like weird deep sea shit, particularly cephalopods. also metal, parasitic fungi, horror, etc.
he/him, ace, adhd (maybe autistic?)
opinions are mine and not my employer’s
he/him, ace, adhd (maybe autistic?)
opinions are mine and not my employer’s
Reposted by Jeff Day
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=...
November 13, 2025 at 1:29 PM
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=...
Reposted by Jeff Day
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/...
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....
onlinelibrary.wiley.com
November 13, 2025 at 10:45 AM
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/...
Reposted by Jeff Day
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...
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...
<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...
dailyparasite.blogspot.com
November 12, 2025 at 12:30 PM
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...
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...
Reposted by Jeff Day
At MBARI, we believe discovery begins with opportunity—the kind that changes lives and careers. Our immersive internship and postdoctoral programs are helping launch the next generation of ocean explorers who are transforming ocean science and technology.
Learn more: www.mbari.org/news/mbari-o...
Learn more: www.mbari.org/news/mbari-o...
MBARI opens opportunities for the next generation of ocean explorers • MBARI
For nearly three decades, MBARI has been launching the next generation of ocean explorers whose curiosity and creativity are shaping the future of ocean discovery.
www.mbari.org
November 12, 2025 at 6:55 PM
At MBARI, we believe discovery begins with opportunity—the kind that changes lives and careers. Our immersive internship and postdoctoral programs are helping launch the next generation of ocean explorers who are transforming ocean science and technology.
Learn more: www.mbari.org/news/mbari-o...
Learn more: www.mbari.org/news/mbari-o...
Reposted by Jeff Day
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
November 9, 2025 at 10:00 PM
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
Reposted by Jeff Day
"Deep-sea mining risks for sharks, rays, and chimaeras" www.cell.com/current-biol...
@seaprinceaaron.bsky.social & colleagues
@currentbiology.bsky.social
@seaprinceaaron.bsky.social & colleagues
@currentbiology.bsky.social
October 8, 2025 at 4:00 PM
"Deep-sea mining risks for sharks, rays, and chimaeras" www.cell.com/current-biol...
@seaprinceaaron.bsky.social & colleagues
@currentbiology.bsky.social
@seaprinceaaron.bsky.social & colleagues
@currentbiology.bsky.social
Reposted by Jeff Day
whalefall / life seeks to perpetuate 2
November 3, 2025 at 8:06 AM
whalefall / life seeks to perpetuate 2
Reposted by Jeff Day
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.
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.
October 30, 2025 at 4:00 PM
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.
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.
suddenly very glad i follow the nuclear proliferation folks like martin:
Damn it, he's gotten around to nuclear weapons.
www.theguardian.com/us-news/2025...
So, an "equal basis" of testing nuclear weapons with Russia and China is probably about what we're doing now with some advantages (eg, access to fusion burn)...
1/2
www.theguardian.com/us-news/2025...
So, an "equal basis" of testing nuclear weapons with Russia and China is probably about what we're doing now with some advantages (eg, access to fusion burn)...
1/2
Trump directs Pentagon to ‘immediately’ start testing US nuclear weapons
US president references China and Russia in Truth Social post shortly before meeting with President Xi Jinping
www.theguardian.com
October 30, 2025 at 2:20 AM
suddenly very glad i follow the nuclear proliferation folks like martin:
Reposted by Jeff Day
Reposted by Jeff Day
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)
(It's a view of the "shame face", not the dorsal body)
October 27, 2025 at 11:17 PM
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)
(It's a view of the "shame face", not the dorsal body)
Reposted by Jeff Day
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 ☺️
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 ☺️
October 28, 2025 at 1:11 PM
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 ☺️
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 ☺️
Reposted by Jeff Day
🎃 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
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
October 27, 2025 at 4:42 PM
🎃 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
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
Reposted by Jeff Day
Brittle star swimming! Love this movement.
October 27, 2025 at 7:30 PM
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.
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 😭
“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 😭
October 27, 2025 at 9:47 AM
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.
Reposted by Jeff Day
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 😭
“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 😭
October 27, 2025 at 12:09 AM
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 😭
“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 😭
Reposted by Jeff Day
@jeffday.bsky.social on a CIAC talk!!!!! Im beaming with pride
October 27, 2025 at 12:03 AM
@jeffday.bsky.social on a CIAC talk!!!!! Im beaming with pride
Reposted by Jeff Day
🌟 ‘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...
It was published at the Joint Workshop on Marine Vision, at the International Conference on Computer Vision ⬇️
www.bas.ac.uk/media-post/a...
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.
www.bas.ac.uk
October 20, 2025 at 4:44 PM
🌟 ‘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...
It was published at the Joint Workshop on Marine Vision, at the International Conference on Computer Vision ⬇️
www.bas.ac.uk/media-post/a...
Reposted by Jeff Day
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...
🌊🧪🦑
link.springer.com/article/10.1...
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...
link.springer.com
October 23, 2025 at 1:23 PM
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...
🌊🧪🦑
link.springer.com/article/10.1...
Reposted by Jeff Day
Congregation of cusk-eels (Genypterus chilensis, Ophidiiformes) at a deep-sea methane seep off Chile
🧪🦑🌊
esajournals.onlinelibrary.wiley.com/doi/10.1002/...
🧪🦑🌊
esajournals.onlinelibrary.wiley.com/doi/10.1002/...
October 23, 2025 at 1:13 PM
Congregation of cusk-eels (Genypterus chilensis, Ophidiiformes) at a deep-sea methane seep off Chile
🧪🦑🌊
esajournals.onlinelibrary.wiley.com/doi/10.1002/...
🧪🦑🌊
esajournals.onlinelibrary.wiley.com/doi/10.1002/...
Reposted by Jeff Day
This was supposed to be the #SundayFishSketch ...
The bumby snailfish is refusing to get painted at the moment :/ ... I may return to it later or try again.
The bumby snailfish is refusing to get painted at the moment :/ ... I may return to it later or try again.
October 6, 2025 at 11:13 PM
This was supposed to be the #SundayFishSketch ...
The bumby snailfish is refusing to get painted at the moment :/ ... I may return to it later or try again.
The bumby snailfish is refusing to get painted at the moment :/ ... I may return to it later or try again.
please bask in the 4K glory of @nautiluslive.org's recent magnapinna observation
We encountered this #BigfinSquid (genus Magnapinna) over 5,100 meters deep while exploring the abyssal plain in the waters of the #CookIslands. They are rarely ever seen by humans and are the only squid known to live as deep as the hadal zone. www.youtube.com/watch?v=7UvS...
Rare Bigfin Squid in the Cook Islands | Nautilus Live
YouTube video by EVNautilus
www.youtube.com
October 22, 2025 at 7:29 PM
please bask in the 4K glory of @nautiluslive.org's recent magnapinna observation
Reposted by Jeff Day
Day two of our Deepwater Horizon cruise is a success!
October 21, 2025 at 9:19 PM
Day two of our Deepwater Horizon cruise is a success!
Reposted by Jeff Day
👻 G-g-ghost? Nope, s-s-snailfish! 🤍
Meet the mesmerizing new addition to our Into the Deep/En lo Profundo exhibit, rough snailfish! These ethereal charmers live in the benthic zone, a scientific term for the seafloor.
Meet the mesmerizing new addition to our Into the Deep/En lo Profundo exhibit, rough snailfish! These ethereal charmers live in the benthic zone, a scientific term for the seafloor.
October 20, 2025 at 8:57 PM
👻 G-g-ghost? Nope, s-s-snailfish! 🤍
Meet the mesmerizing new addition to our Into the Deep/En lo Profundo exhibit, rough snailfish! These ethereal charmers live in the benthic zone, a scientific term for the seafloor.
Meet the mesmerizing new addition to our Into the Deep/En lo Profundo exhibit, rough snailfish! These ethereal charmers live in the benthic zone, a scientific term for the seafloor.
Reposted by Jeff Day
How cool is this? A LEGO Argo Float! Thanks for the inspo @mbarinews.bsky.social! "Treated" everyone in the brick store to a 5min ad-hoc talk why Argo Floats are so cool and important. Shouldn't have asked what I'm building 🙃
✅Permanent Ocean Monitoring
✅Aid weather/climate forecasts
✅Free/open data
✅Permanent Ocean Monitoring
✅Aid weather/climate forecasts
✅Free/open data
October 16, 2025 at 1:04 PM
How cool is this? A LEGO Argo Float! Thanks for the inspo @mbarinews.bsky.social! "Treated" everyone in the brick store to a 5min ad-hoc talk why Argo Floats are so cool and important. Shouldn't have asked what I'm building 🙃
✅Permanent Ocean Monitoring
✅Aid weather/climate forecasts
✅Free/open data
✅Permanent Ocean Monitoring
✅Aid weather/climate forecasts
✅Free/open data