Jeff Day
@jeffday.bsky.social
3.2K followers 580 following 5.8K posts
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
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Reposted by Jeff Day
sherylnyt.bsky.social
BREAKING: Friday night massacre underway at CDC. Doznes of "disease detectives," high-level scientists, entire Washington staff and editors of the MMWR (Morbidity and Mortality Weekly Report) have all been RIFed and received the following notice:
Reposted by Jeff Day
studio-mbj.bsky.social
Working away on this #deepsea carnivorous sponge, crinoid and brittle star painting. It’s getting there, probably 75% done now, adding all the details and rainbow colors is my fav part! #deepseacreatures #coldwatersponges 🐡🦑 #invertebrates #acrylicpainting #marinebiology #art #painting #artist
Reposted by Jeff Day
tuexplorer1.bsky.social
Munnopsid isopod! I love these little critters. @nautiluslive.org #CookIslands #MarineLife
Reposted by Jeff Day
ctmurphy1.bsky.social
Begging scientists (and media posts about science) to stop using ChatGPT-generated images
Reposted by Jeff Day
schmidtocean.bsky.social
In celebration of World Octopus Day, we wanted to revisit one of our favorite cephalopod sightings, the glass octopus — Vitreledonella richardi filmed during a month-long #PhoenixIslandsCoral expedition in 2021.
Reposted by Jeff Day
schmidtocean.bsky.social
In honor of World Squid Day, here's a Moroteuthopsis longimana fr #SouthSandwichIslands. International cephalopod awareness days happen each year in Oct — we celebrate octopuses on the 8th, in honor of their 8 arms, and squid on the 10th, to acknowledge their ten appendages (8 arms and 2 tentacles).
Reposted by Jeff Day
tuexplorer1.bsky.social
A better close-up of another faceless cusk eel! You can only see these guys down deep like this! 4539m @nautiluslive.org #CookIslands #MarineLife
Reposted by Jeff Day
tuexplorer1.bsky.social
Enypniastes 4413m. @nautiluslive.org #CookIslands #MarineLife
jeffday.bsky.social
casper octopus sighting from @nautiluslive.org this morning

for those unfamiliar, casper is an undescribed species of deep sea octopus threatened by deep sea mining:

www.science.org/content/arti...
Reposted by Jeff Day
Reposted by Jeff Day
Reposted by Jeff Day
oceanfilly.bsky.social
Another carnivorous sponge for you: The Ping Pong Tree Sponge! #LetsChangeThat
Reposted by Jeff Day
tuexplorer1.bsky.social
Black cydippid cteno. I don't see black ctenos too often
@schmidtocean.bsky.social dive 854 #uruguaysub200 #MarineLife
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tuexplorer1.bsky.social
Grimpoteuthis
@schmidtocean.bsky.social dive 854 #uruguaysub200 #MarineLife
Reposted by Jeff Day
rahaeli.bsky.social
Since folks often ask for examples of how I politely push back when doctors don't understand the clinical significance of "shit that should be taken more seriously in people with a specific condition", I'll share the reply I wrote:
Thanks for getting back to me! The finding I am most interested in clinically pursuing is the venous occlusion (most particularly the upper cervical internal jugular veins, but also the left occipital emissary vein dehiscence). I know the finding is common in non-symptomatic patients as well and not always a matter of clinical concern, but the literature does show a slowly emerging connection with cerebral venous outflow deficiency, particularly the central jugular vein, and symptoms of IIH, including the pulsatile tinnitus that's my primary manifestation, in patients with Ehlers Danlos, mast cell activation disorders, and POTS (all of which I have). The description in the literature of symptoms of various venous outflow deficiency disorders in patients with one or more of those three disorders also match a number of my other symptoms, including the postural triggers for the pulsatile tinnitus worsening, the location of the headache that often follows it, most of the minor vision/perceptual issues, and the general worsening of postural orthostatic intolerance episodes I've experienced in the last year. 

Given that, would you recommend following up with you, or with a neurologist or vascular specialist who's more familiar with the effects of venous outflow deficiency in patients with Ehlers-Danlos? And if the latter, do you have any recommendations?
Reposted by Jeff Day
noncompliantcyborg.bsky.social
It’s almost Ctenophore Day! I set up a BioBlitz on @inaturalist.bsky.social to celebrate. Spread the word, and let’s see how many people we can get out looking for ctenos!

🐙🦑🌿🧪

www.inaturalist.org/projects/cte...
An edited iNaturalist project page for ctenophore day 10/04/2025. In the about it says Celebrate ctenophore day by going out and finding ctenophores on October 4th, 2025! Can we get to 1004+ new ctenophore observations to celebrate? Are you ready for the Cteno Day Bioblitz? Join today! inaturalist.org.projects/ctenophore-day-2025
jeffday.bsky.social
ah yes, i’ve seen those! ty for the reminder
jeffday.bsky.social
“oh that? yeah, my arm just hasn’t been the same since my son grew out of there and my body tried to replace it”
jeffday.bsky.social
how cursed would it be if humans just propagated tiny babies off of our limbs like this
jeffday.bsky.social
how’s the aftermath of getting both? was debating scheduling them separately
Reposted by Jeff Day
echinoblog.bsky.social
New octocoral-Iridigorgia chewbacca! named after the Star Wars wookie! #octocoralfriday www.hawaii.edu/news/article...
closeup of coral branches
jeffday.bsky.social
if we talkin succulent propagation as body horror i am required to direct you to the kalanchoe “mother of thousands”

en.wikipedia.org/wiki/Kalanch...
Kalanchoe daigremontiana - Wikipedia
en.wikipedia.org
Reposted by Jeff Day
schmidtocean.bsky.social
When chanchitos fly, it happens 2,340 meters deep in the Ocean! This is a sea pig, or chanchito, if you’re a member of the #Uruguaysub200 science team. Scotoplanes sp. is a genus of deep-sea sea cucumbers of the family Elpidiidae. 🎥ROV SuBastian / Schmidt Ocean Institute