Dr. Nancy Sheridan

Dr. Nancy Sheridan

@nsheridan.bsky.social

Geneticist in Florida focusing on🪸🐠🦀🦐🐚 and other marine organisms.

690 Followers 595 Following 86 Posts Joined Nov 2024
5 days ago
A bright yellow nudibranch with black and blue markings crawls on underwater vegetation against a dark background. Photo by Olakhalaf.

There's a sea creature whose common name is the pikachu nudibranch and I need everyone to see it immediately.

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3 weeks ago

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1 month ago
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Gulf of Mexico: The Sea Spider Stroke YouTube video by Global Foundation For Ocean Exploration

A timely encore of this SWIMMING SEA SPIDER for #seaspiderSaturday! #okeanos #pycnogonid youtu.be/7xt-R9UM-j0?...

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1 month ago
GBE | Genome Skimming Illuminates Hidden Species Diversity and Symbiodiniaceae Associations in East Pacific Pocillopora Corals

@michaeltconnelly.bsky.social et al. sequenced 342 Pocillopora coral samples from the Eastern Tropical Pacific, revealing four distinct species; algal symbiont community profiling identified dominant symbionts that varied according to host species.

🔗 doi.org/10.1093/gbe/evaf235

#genome #evolution

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1 month ago
4 orange pentagonal sea stars oral view of a white specimen showing 5 tube foot grooves converging on the central mouth

Recently described "cookie" star Plinthaster australis from the #coralseafrontiers expedition! Originally known only from New Caledonia!

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1 month ago
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In fish, low doses of common pesticide speed aging and death Polluted lakes and lab experiments highlight harms of chronic exposure to chlorpyrifos

A study found that a widely used insecticide, chlorpyrifos, speeds up aging in a common lake fish by shortening the protective caps on its chromosomes, and leads to its premature death. https://scim.ag/49Hp7jU

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1 month ago
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An octopus arrives from the right and envelopes the brain coral like an alien slurping a planet only to be photobombed by a redband parrotfish peacocking for the camera 🔮👽🐙🌎😁🦜🐟🪸🌇 #octopus #redbandparrotfish #peacocking #cheesin #photobomb #coralcitycamera #miami #portmiami #biscaynebay #coralcity

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1 month ago
pineapple shaped orange colored skeleton of a cactus urchin with white spots where spines have been removed. pineapple shaped orange colored skeleton of a cactus urchin with white spots where spines have been removed.

Cleared skeleton of a so-called Cactus Urchin1 Dermechinus horridus! with its bizarre high-aspect test! Possibly an adaptation to filter feeding! #echinoday

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2 months ago
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Scientists Catch Jellyfish and Sea Anemones Behaving in Surprisingly Human Ways Sea anemones and jellyfish don’t have brains, but the way their neurons behave during sleep shows some surprising similarities to humans

Sea anemones and jellyfish don’t have brains, but the way their neurons behave during sleep shows some surprising similarities to humans

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2 months ago

9,000 coral babies born in Apollo Beach reef restoration 🪸
www.wfla.com/news/hillsbo...

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2 months ago
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Coming this Friday ep. 568 of #evolutionradio! Stay tuned!
#basshouse #deephouse #drumandbass #dubstep #house #melodichouseandtechno #minimaldeeptech #organichousedowntempo #progressivehouse #techhouse #techno #djlife #producerlife #edm #music

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2 months ago
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Salmon Spotted in California Creek for the First Time in Decades: Here's Why the Fish Are Back A newly completed restoration project on in the San Francisco Bay Area has opened more than 20 miles of habitat — and Chinook salmon wasted no time swimming back.

a small win that I missed earlier... people.com/first-salmon...

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3 months ago
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Over a third of animals impacted in deep sea mining test - scientists The findings contribute to a controversial debate that pits green technology against the environment.

"Machines mining minerals in the deep ocean have been found to cause significant damage to life on the seabed,...
The number of animals found in the tracks of the vehicles was reduced by 37% compared to untouched areas, according to the scientists." #deepsea bbc.com/news/article...

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3 months ago
Pink hair squat lobster inside the ridges of a barrel sponge

The Pink Hairy Squat Lobster (Lauriea siagiani) is a small crustacean that lives on barrel sponges in the Indo-Pacific region. It is more closely related to crabs than lobsters & is known for its color & hair-like structures called setae, which help it sense vibrations & filter food.

#marinelife

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3 months ago
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A rare photosynthesizing sea slug has been found off N.S. Here's why scientists are excited | CBC News Researchers believe Elysia chlorotica holds promise for medical advances, but it's been too elusive to study.

A rare photosynthesizing sea slug has been found off N.S. Here's why scientists are excited #NovaScotia

Researchers believe Elysia chlorotica holds promise for medical advances, but it's been too elusive to study

www.cbc.ca/news/canada/...

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3 months ago
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New octopus dropped down in Coral City 👽✌️🐙 #octopus #cephalopodsofcoralcity #cephalopod #headfoot #alien #dropdown #peaceout #coral #coralhead #coralcitycamera #miami #portmiami #biscaynebay #coralcity

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3 months ago

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3 months ago
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🌊 The green shore crab, Carcinus maenas, a top marine invader present on six continents, now has a high-quality reference genome! This breakthrough enables deeper insights into its invasion success and aids in managing invasive species.
Photo: nwtreatytribes.org/s...

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4 months ago
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Gliding over a forest of quadricolor anemones in the Coral Morphologic coral museum #coralmorphologic #miami #coralcity

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4 months ago
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#Ecosde2Cañones sea life & fish w/antifreeze proteins! “It was wonderful to see the notothenioid fish curiously approach the ROV camera, reminding us that every encounter with marine life is deeply connected to the physical dynamics shaping their environment.” - Chief Scientist Dr. Silvia Romero

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4 months ago
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🐙 Scripps Oceanography scientists have engineered bacteria to mass‑produce the pigment that lets octopuses and squids change color! This breakthrough not only sheds light on animal chemistry but also paves the way for sustainable, bio‑based materials. t.co/Oitp8NnntR

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4 months ago
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Recent Expeditions Confirm Discovery of 30 Previously Unknown Deep-Sea Species - environment coastal & offshore Thirty previously unknown deep-sea species, including a carnivorous “death-ball” sponge, have been confirmed from one of the most remote parts of the planet by The Nippon Foundation–Nekton Ocean Censu...

30 previously unknown deep-sea species, including a carnivorous “death-ball” sponge, have been confirmed from one of the most remote parts of the planet by The Nippon Foundation–Nekton @oceancensus.bsky.social and collaborators. ecomagazine.com/news/researc...
🦑 🌊

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4 months ago
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Ohio State, State of Ohio harness skills to save wildlife Just how many species of bees live in Ohio? Based on other states, estimates land between 400 and 450. Until recently, there hasn’t been a way to be sure.Thanks to the Ohio Biodiversity Conservation P...

A "good news" thing that the State of Ohio does is partner with universities and orgs like @visitcolumbuszoo.bsky.social to do vital conservation research. This story highlights fantastic work on native bees, but the efforts also focus on snakes, mussels & hellbenders

news.osu.edu/ohio-state-s...

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5 months ago
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This tiny butterfly has the most chromosomes of any animal on Earth Scientists have confirmed that the Atlas blue butterfly carries the most chromosomes of any animal, with 229 pairs. Unlike duplication, its chromosomes split apart, reshaping its genome in surprising ...

Homie got 229 pairs of chromosomes

www.sciencedaily.com/releases/202...

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5 months ago
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Jane Goodall, Eminent Primatologist Who Chronicled the Lives of Chimps, Dies at 91

Of all the best and kindest humans to ever live, Jane Goodall is near the top of my list.

Rest in Peace, you beautiful soul.

On behalf of the earth, I thank you

www.nytimes.com/2025/10/01/o...

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5 months ago
YouTube
Deep-Sea Anemones of the Marshall Islands | Nautilus Live YouTube video by EVNautilus

New #DEEPSEA Sea anemones of the Marshall Islands video by EV Nautilus! youtu.be/rnAfi-NBGXY?...

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6 months ago
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Corymorpha tropica Corymorpha tropica from Pura Segara, near Tulamben, Kubu, Karangasem Regency, Bali, Indonesia on November 4, 2015 by uwkwaj. With commensal amphipods

Not as clear-but wow. there's a whole little VILLAGE of amphipods living around the tentacles of this #hydroid! Corymorpha from Indonesia, www.inaturalist.org/observations...

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6 months ago
A top-down photo of a round... thing with a dark inner ring with a light pattern on it, and a light-coloured outer ring around that. Outside the second ring, multiple tentacles extend out of frame; they are green and have bushy brown structures on them.  A sandy seabed is visible in the background.

#Nature #Wildlife #NaturePhotography #WildlifePhotography #UnderwaterPhotography

An #Invertefest mystery! I don't know what this is. I *think* it might be the mouth and tentacles of a buried sea cucumber of some sort, but I don't recall it doing the usual food-to-mouth transfer that you often see with those. Maybe it's a small aquatic Sarlacc?

#MarineLife 🌿

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6 months ago
A cluster of giant green anemones on brown rocks

Giant green anemones at the Seattle Aquarium

#MarineLife #ColorADay #GreenSat #PNW #Cnidaria #Green #Photography

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