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Dr. Nancy Sheridan

@nsheridan.bsky.social
712 followers 605 following 86 posts

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

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Reposted by Dr. Nancy Sheridan
American Museum of Natural History @amnh.org · 14/09/2026
Cookie dough? Nope, just the chocolate chip sea cucumber. Found throughout warm, shallow waters in the Atlantic, this species grows about 1 ft (30.5 cm) long. Fun fact: There are more than 1,000 species of sea cucumbers! Photo: Matteo Cassella, CC BY-NC 4.0, iNaturalist
A photo of a chocolate chip sea cucumber. The organism is long and loaf-like and covered in spots.
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Michelle says: Be kind. Always. ❤️ @snarkysillysad.bsky.social · 12/09/2026
Marcelo Johan Ogata has an underwater encounter with a feather star (Crinoid sp.). These ancient invertebrates first appeared in the fossil record about 300 million years before the dinosaurs. #AGoodPlace
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Michael Middlebrooks @secretsluglab.bsky.social · 27/08/2026
A few nudibranch sea slugs for #invertfest. These photos were taken in Anilao, Philippines. #sluglife
A dorid nudibranch sea slug with an orange body with purple spots on the dorsum. The slug has a yellow band and light yellow gills and rhinophores. A dark green nudibranch sea slug munching on some light green tunicates.
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Reposted by Dr. Nancy Sheridan
Coral City Camera @coralcitycamera.bsky.social · 26/07/2026
Hard to believe this scene exists within an urbanized waterway in one of the busiest ports in the world🥹🔮🐠🪸🛳️🌇 #southernstingray #stingraysofcoralcity
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Digital Brain @yourdigitalbrain.bsky.social · 06/04/2026
Witness the elegance of the swimming Feather Star, a crinoid that dates back to the Ordovician era, over 480 million years ago. A true marvel of evolution in our oceans.
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joeymaier 🌊 @joeymaier.bsky.social · 13/03/2026
One of The World's Rarest Sea Turtles Washes Up in Texas Covered in Organisms share.google/76HyFZS7ytWL...
share.google
One of the World's Rarest Turtles Washes Up in Texas, Covered in Living Organisms and in Desperate Need of Help
A critically endangered Kemp's ridley sea turtle was rescued in Texas after being found covered in organisms. The turtle is now receiving care from the Gulf Center for Sea Turtle Research and veterina...
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Reposted by Dr. Nancy Sheridan
Chris Mah @echinoblog.bsky.social · 13/03/2026
Deep-sea sea pen Umbelulla! from #okeanos EX1806 #octocoralfriday youtu.be/pmvdAJrLFLA?...
youtu.be
Okeanos Explorer Video Bite: Colorful Polyps of Two Different Deep Sea Pens
YouTube video by Inner Space Center
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Reposted by Dr. Nancy Sheridan
Dr. Wildlife @drwildlife.bsky.social · 08/03/2026
There's a sea creature whose common name is the pikachu nudibranch and I need everyone to see it immediately.
A bright yellow nudibranch with black and blue markings crawls on underwater vegetation against a dark background. Photo by Olakhalaf.
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Chris Mah @echinoblog.bsky.social · 08/02/2026
A timely encore of this SWIMMING SEA SPIDER for #seaspiderSaturday! #okeanos #pycnogonid youtu.be/7xt-R9UM-j0?...
youtu.be
Gulf of Mexico: The Sea Spider Stroke
YouTube video by Global Foundation For Ocean Exploration
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Genome Biology and Evolution @genomebiolevol.bsky.social · 03/02/2026
@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
GBE | Genome Skimming Illuminates Hidden Species Diversity and Symbiodiniaceae Associations in East Pacific Pocillopora Corals
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Chris Mah @echinoblog.bsky.social · 29/01/2026
Recently described "cookie" star Plinthaster australis from the #coralseafrontiers expedition! Originally known only from New Caledonia!
4 orange pentagonal sea starsoral view of a white specimen showing 5 tube foot grooves converging on the central mouth
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Reposted by Dr. Nancy Sheridan
Science Magazine @science.org · 20/01/2026
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. scim.ag/49Hp7jU
scim.ag
In fish, low doses of common pesticide speed aging and death
Polluted lakes and lab experiments highlight harms of chronic exposure to chlorpyrifos
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Coral City Camera @coralcitycamera.bsky.social · 19/01/2026
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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Chris Mah @echinoblog.bsky.social · 16/01/2026
Cleared skeleton of a so-called Cactus Urchin1 Dermechinus horridus! with its bizarre high-aspect test! Possibly an adaptation to filter feeding! #echinoday
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.
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Scientific American @sciam.bsky.social · 08/01/2026
Sea anemones and jellyfish don’t have brains, but the way their neurons behave during sleep shows some surprising similarities to humans
scientificamerican.com
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
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Dr. Nancy Sheridan @nsheridan.bsky.social · 08/01/2026
9,000 coral babies born in Apollo Beach reef restoration 🪸 www.wfla.com/news/hillsbo...
wfla.com
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Alan Fraze @alanfraze.bsky.social · 08/01/2026
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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Nancy Knowlton @nancyknowlton.bsky.social · 20/12/2025
a small win that I missed earlier... people.com/first-salmon...
people.com
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.
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Chris Mah @echinoblog.bsky.social · 05/12/2025
"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...
bbc.com
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.
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Alicia @scuba-licia.bsky.social · 02/12/2025
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
Pink hair squat lobster inside the ridges of a barrel sponge
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Cheryl in Nova Scotia 🇨🇦🍁🍁 @minibubbly.bsky.social · 27/11/2025
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/...
cbc.ca
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.
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Coral City Camera @coralcitycamera.bsky.social · 22/11/2025
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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Dr. Nancy Sheridan @nsheridan.bsky.social · 22/11/2025
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The American Genetic Association @theaga.bsky.social · 18/11/2025
🌊 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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Coral Morphologic @coralmorphologic.bsky.social · 08/11/2025
Gliding over a forest of quadricolor anemones in the Coral Morphologic coral museum #coralmorphologic #miami #coralcity
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Schmidt Ocean Institute @schmidtocean.bsky.social · 06/11/2025
#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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Scripps Institution of Oceanography @scrippsocean.bsky.social · 06/11/2025
🐙 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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Dr. Dawn Wright @deepseadawn.bsky.social · 06/11/2025
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... 🦑 🌊
ecomagazine.com
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...
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Meg Daly @megdaly.bsky.social · 24/10/2025
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...
news.osu.edu
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...
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Bryan White, MS Bio, MPH 🧬 @crvscience.com · 05/10/2025
Homie got 229 pairs of chromosomes www.sciencedaily.com/releases/202...
sciencedaily.com
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 ...
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Reposted by Dr. Nancy Sheridan
DrDinD.bsky.social @drdind.bsky.social · 01/10/2025
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...
nytimes.com
Jane Goodall, Eminent Primatologist Who Chronicled the Lives of Chimps, Dies at 91
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Chris Mah @echinoblog.bsky.social · 25/09/2025
New #DEEPSEA Sea anemones of the Marshall Islands video by EV Nautilus! youtu.be/rnAfi-NBGXY?...
youtu.be
Deep-Sea Anemones of the Marshall Islands | Nautilus Live
YouTube video by EVNautilus
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Chris Mah @echinoblog.bsky.social · 02/09/2025
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...
inaturalist.org
Corymorpha tropica
Corymorpha tropica from Pura Segara, near Tulamben, Kubu, Karangasem Regency, Bali, Indonesia on November 4, 2015 by uwkwaj. With commensal amphipods
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Reposted by Dr. Nancy Sheridan
Matt @xenomatt.bsky.social · 30/08/2025
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 🌿
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
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Andrea Peterson @andreapeterson.bsky.social · 23/08/2025
Giant green anemones at the Seattle Aquarium #MarineLife #ColorADay #GreenSat #PNW #Cnidaria #Green #Photography
A cluster of giant green anemones on brown rocks
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Marine Biological Laboratory @mblscience.bsky.social · 11/08/2025
Happy #MicroscopyMonday! This is a larval sea anemone, Nematostella vectensis. MBL researchers study this species, found in Sippewissett Marsh, for development and regeneration. Image taken using a polychromatic polarizing microscope. 📷 Michael Shribak and Karen Echeverri
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Earth BioGenome Project 🌍 @ebpgenome.bsky.social · 29/07/2025
(1/4) 🧬 Why Sequence the Genomes of Earth’s Biodiversity? The Earth BioGenome Project 🌍 is a global network of initiatives working together to create a complete genome library for all Eukaryotic life—from mushrooms 🍄 to mammals 🐘. #biodiversity #genomes #sequence #earthbiogenome #education #stem
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Chris Mah @echinoblog.bsky.social · 21/06/2025
MORE of this! #echinoday www.inaturalist.org/observations...
inaturalist.org
Western Spiny Brittle Star (Ophiothrix spiculata)
Western Spiny Brittle Star from Mission Point Park, 2600 Bayside Ln, San Diego, CA 92109, USA on July 27, 2024 at 09:00 AM by Alexis
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Chris Mah @echinoblog.bsky.social · 17/06/2025
What happens when we look at starfish behavior with #timelapse? there is remarkable complexity! comparable to mammals! from a thing I wrote years ago echinoblog.blogspot.com/2012/05/star...
echinoblog.blogspot.com
Starfish Bouts!! Behavior REVEALED!!!
Photo by Dida K on Flickr! "Do Starfish EVER move?   "Are those sea stars alive?" These are ACTUAL questions I have been asked by the...
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Robert "The Bobby Yaga" McNees @mcnees.bsky.social · 27/05/2025
Conservationist, marine biologist, and science writer Rachel Carson was born #OTD in 1907. Carson challenged the widespread use of pesticides in her book “Silent Spring,” and testified before Congress on environmental policy and human health. 🧪 👩‍🔬 Image: Alfred Eisenstaedt/LIFE/Getty
A black and white photo of an older woman with dark curly hair standing outside near a creek or small river, wearing a dark jacket over a white blouse. She is holding and examining a jar containing water and other material from the creek.
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Dr. Nancy Sheridan @nsheridan.bsky.social · 18/04/2025
www.livescience.com/45655-marine... The specific name daphneae is after Daphne Gail Fautin, “in honor of her contributions to actinarian systematics.” #saveNOAA 🪸 #marinelife
livescience.com
Mistaken Identity: 'Sea Anemone' Is Actually New Type of Animal
A newly reformed "tree of life" for anemones revealed an errant branch: It turns out that one of the creatures classified as an anemone is actually the first discovered in a new order of animals, the ...
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Chris Mah @echinoblog.bsky.social · 17/04/2025
#saveNOAA this includes Coral and sponge data! eos.org/research-and...
eos.org
NOAA Datasets Will Soon Disappear - Eos
NOAA has quietly reported that they will soon decommission 14 datasets, products, and catalogs related to earthquakes and marine, coastal, and estuary science.
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Reposted by Dr. Nancy Sheridan
Maddy Seale @maddyseale.bsky.social · 15/04/2025
I'm a few days late to post this but very excited to see this paper on the cover of Science finding a mechanism for Huanglongbing/citrus greening resistance. Read the paper here: www.science.org/doi/10.1126/... and the Perspective here: www.science.org/doi/10.1126/...
science.org
Targeted MYC2 stabilization confers citrus Huanglongbing resistance
Huanglongbing (HLB) is a devastating citrus disease. In this work, we report an HLB resistance regulatory circuit in Citrus composed of an E3 ubiquitin ligase, PUB21, and its substrate, the MYC2 trans...
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Chris Mah @echinoblog.bsky.social · 09/04/2025
A stunningly red Hermodice! Are they called fireworms because they are, as the kids say.. pretty fire! #wormwednesday www.inaturalist.org/observations...
inaturalist.org
Bearded Fireworm (Hermodice carunculata)
Bearded Fireworm from Spain on November 20, 2014 by Tony Gilbert. Night Dive. The colours seem to be richer at night.
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Chris Mah @echinoblog.bsky.social · 03/04/2025
NOM NOM! Hippasteria my favorite corallivorous sea star munching on its fav food! Bamboo coral about 1787 m Mendelssohn seamount, North Pacific #Okeanos #echinoday
orange sea star on denuded octocoral branches
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Chris Mah @echinoblog.bsky.social · 02/04/2025
The lovely Indonesian Chloeia bemisae-showing off them bristles that say DO NOT TOUCH! #wormwednesday www.inaturalist.org/observations...
inaturalist.org
Chloeia bemisae
Chloeia bemisae from Ambon, ID-MA, ID on March 4, 2025 at 09:30 AM by Christian Luff
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Matthew L. Miller @matthewlmiller.bsky.social · 28/03/2025
Spotting all 22 species of US chipmunks will take you to some of the best national parks and public lands. A quirky but worthwhile wildlife quest.
blog.nature.org
Chipmunk Quest
A chipmunk is a chipmunk, right? Nope. There are 22 species in the United States. Here’s how to find them.
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Dr. Drew harvell @drewharvell.bsky.social · 23/03/2025
#Nudibranch superpowers! I'm updating the blog on my website with tidepool meanderings, starting with nudibranchs. Here is my Monterey #tidepool favorite, Hopkin's Rose. It uptakes its color from its prey, Rosy Bryozoan. drewharvell.com/2025/03/22/f... #marinelife #invertebrates #nudivember
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Chris Mah @echinoblog.bsky.social · 20/03/2025
ooo! #OKEANOS spotted a bentic comb jelly, Lyrocteis on yesterday's shakedown cruise! North Pacific near Hawaii #saveNOAA youtu.be/V_cqnz_JG5k?...
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