Jo Wolfe, PhD
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Jo Wolfe, PhD
@jopabinia.bsky.social
Why things evolve into crabs. Evolutionary biologist (species alive today AND fossils, and how to study them together). Canadian at UCSB and Harvard (she/her)

My science: https://scholar.google.com/citations?user=CKqoVjEAAAAJ&hl=en
Pinned
Our paper on convergent evolution of land crabs is out in its final final form. The journal didn't pick my image as the cover, so I'm sharing it here because it must be seen!

academic.oup.com/sysbio/artic...

🦀🦑🧪
Reposted by Jo Wolfe, PhD
Thanks for boosting this! I loved working on these pieces.
@hakaimagazine.com did a series on what life is like for these guys (features a Mystacocarid - not in the preview pic! There are 4 articles, check them all out)

Here's how to keep the Hakai team going www.biographic.com/hakai-magazi...

#Crustmas 🧪
December 7, 2025 at 2:19 PM
Reposted by Jo Wolfe, PhD
I missed #Crustmas yesterday, so here is a double! Two entire subclasses, Mystacocarida and Cephalocarida, live only among sediment grains (intertidal and underwater, respectively), both discovered in New England in the 20th century. Makes you wonder what else is lurking where we haven't looked 👀
🧪🦑
December 7, 2023 at 4:02 PM
Reposted by Jo Wolfe, PhD
@hakaimagazine.com did a series on what life is like for these guys (features a Mystacocarid - not in the preview pic! There are 4 articles, check them all out)

Here's how to keep the Hakai team going www.biographic.com/hakai-magazi...

#Crustmas 🧪
December 7, 2024 at 6:37 PM
#Crustmas glow upper right, good colors
I will never tidepool at night without a uv light again

🌊🌿🦀🐙🦑
December 7, 2025 at 1:07 PM
#Crustmas at left
Right. Back to it. 89 Acartia discaudata copepods and 115 colonies of Bacillaria paxillifera logged and in the NPIL database. 💪 #marineplankton 🦑
December 7, 2025 at 1:05 PM
#Crustmas gathering
Shrimps, crabs, and hermits everywhere.🦀
The biodiversity here is just outrageous.
December 7, 2025 at 1:04 PM
I went tide pooling with the staff from “The Shrimp and Crab Aquarium” and we observed more than fifty species of crustaceans. 🦀
December 7, 2025 at 1:03 PM
#Crustmas glow lower right
one more night in the tidepools tonight & I had a blast seeing who fluoresces! just about every crustacean I found fluoresced including eelgrass isopods (couldn't get a good pic unfortunately)

🌊🌿🦀🐙🦑
December 7, 2025 at 1:03 PM
#Crustmas upper right again. Not the abalone, look closer, its the barnacles
I love how abalone shells can become mini reefs

🌊🌿🐙🦑
December 7, 2025 at 1:02 PM
#Crustmas upper right
December 7, 2025 at 1:02 PM
Reposted by Jo Wolfe, PhD
> Keeper Lydia spotted one of Audubon Aquarium's resident crawfish in the middle of a molt!

Video: brown crawfish wiggling out of its old carapace like they're shaking off a too-tight sleeping bag.

[via Audubon Zoo]
December 7, 2025 at 2:35 AM
Reposted by Jo Wolfe, PhD
Deep-Sea-cember: The reason for the season is to be cozy at home 🦐🧽
#deepseadecember #deepseacember #deepsea #glasssponge #shrimp #venusflowerbasket #art #cozy
December 7, 2025 at 3:36 AM
Reposted by Jo Wolfe, PhD
♫ Shrimply...having... a wonderful fishmastime... ♫

#Crustmas #Shrimp
December 7, 2025 at 9:13 AM
Deep-Sea-cember: The reason for the season is to be cozy at home 🦐🧽
#deepseadecember #deepseacember #deepsea #glasssponge #shrimp #venusflowerbasket #art #cozy
December 7, 2025 at 3:36 AM
Reposted by Jo Wolfe, PhD
You beautiful, slinky worm, you! A Xenacoela - I don’t know much about these guys, but I think this one is gorgeous! Thanks @microbe_guru for the ID.
#marineplankton 🦑
December 6, 2025 at 10:28 PM
Reposted by Jo Wolfe, PhD
36 years ago today, 14 women, most of whom were studying engineering, were killed by an anti-feminist gun man at École Polytechnique in Montreal. I was a young graduate student studying physics at the time and I will never forget. #MontrealMassacre #NeverForget 🧪 👩‍🔬 ⚛️ 🎢 #AcademicSky 🇨🇦
December 6, 2025 at 7:02 PM
Reposted by Jo Wolfe, PhD
Today is Canada's National Day of Action & Remembrance on Violence against Women. It marks the day in 1989 when 14 women at Polytechnique in Montreal were murdered by an "incel" (Proving that shit has a new name but is an old problem.)

There are vigils across the country today. Please attend one.
December 6, 2025 at 2:52 PM
Reposted by Jo Wolfe, PhD
In remembrance

#Montreal to honour 14 victims of Polytechnique massacre at ceremony #Dec61989

Representatives from all 3 levels of government expected to be in attendance

www.cbc.ca/news/canada/...
Montreal to honour 14 victims of Polytechnique massacre at ceremony | CBC News
A total of 14 women were murdered in the mass shooting on Dec. 6, 1989. Thirteen others were injured in the attack.
www.cbc.ca
December 6, 2025 at 1:18 PM
Reposted by Jo Wolfe, PhD
Porcelain crab on an anemone

#photo #photography #scuba #dive #crab #crustmas
December 6, 2025 at 8:10 PM
Reposted by Jo Wolfe, PhD
Rehderella belyaevi - unusual fused opercular plates, cobalt mantle tissue, likely a cryptic barnacle species opportunity for #crustmas academic.oup.com/jcb/article-...
December 6, 2025 at 8:24 PM
That's what the #Crustmas hashtag was born for

And the crab feed in general
bsky.app/profile/did:...
I have a neighbor who only has one Christmas decoration in their yard and it’s this. It’s all of like three feet tall and I am delighted every time I see it.

Crab is the true reason for the season.
December 6, 2025 at 9:26 PM
Land Daphnia like crustaceans just like how there's land ostracods, land crabs, land isopods, and obviously insects #Crustmas
"The Non-swimming Chydorid Cladocera of Wet Forests, with
Descriptions of a New Genus and Two New Species" Frey 1980. what do you mean they just ooze around the world
December 6, 2025 at 9:23 PM
Reposted by Jo Wolfe, PhD
PSA: Kīlauea here in Hawaiʻi is doing its thing and you want to see it.
[V3cam] Kīlauea volcano, Hawaii (south Halemaʻumaʻu crater)
YouTube video by USGS
www.youtube.com
December 6, 2025 at 7:27 PM
Reposted by Jo Wolfe, PhD
Deep sea mining is very bad for deep sea ecosystems.
What Scientists Found When a Deep Sea Mining Company Invited Them In
www.nytimes.com
December 6, 2025 at 6:26 PM
Reposted by Jo Wolfe, PhD
Is #SeastarSaturday a thing? 🌊⭐️ After losing so many of these important predators along the west coast of North America a decade ago, seeing their return to our rocky shores always makes me happy. 🤩 #MarineLife #Invertebrate 🦑
December 6, 2025 at 6:52 PM