Just happy to be here.
Joined October 2019
- Tweets 30
- Following 59
- Followers 49
- Likes 40
11 Photos and videos
19 Nov 2025
Why do venomous snakes not just f***ing kill the people trying to harass them? Let me explain.
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Seán Callahan retweeted
16 Nov 2025
Giant lizards demand maximum commitment. If we don't want legal regulation, we must ensure world-class care through self-discipline and standards. Poor husbandry and trophy collectors compromises animal dignity and risks the future of #reptile keeping.
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Seán Callahan retweeted
5 Jun 2025
America's Nature Crisis: WORST states pt 1
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24 May 2025
I make videos about Earth’s Vanishing Biodiversity. This week, I tell the detailed story about the discovery & swift demise of the Steller’s Sea Cow. Hope you’ll watch, enjoy, and will follow along!
youtu.be/HYYeT9hVH88?si=9hRZ…
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Seán Callahan retweeted
22 May 2025
Tune in tomorrow, May 23rd, at 7pm EST to hear the story of how the largest sea cows to ever exist were ruthlessly annihilated in a mere 27 years. We will post both on YouTube & right here on X!
youtube.com/@TheVanishingWil…
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Seán Callahan retweeted
6 May 2025
This hypocrisy needs to stop.
#ClimateChange #ecology #Sustainability #construction #plants #road #trees #naturephotography #earth #biodiversity #Impact #commonsense #nature #conservation #animals #ProtectOurPlanet #EnvironmentalCrisis #ActNow #naturelovers #rainforest
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Seán Callahan retweeted
3 May 2025
Seahorses have an intricate lattice of interconnecting bony plates, arranged delicately and perfectly to give these animals their characteristic movement.
Image Credit: oVert TCN
#nature #earth #animals #naturelovers #biodiversity #naturephotography #explore #fish #science
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24 Mar 2021
The pathetic sprinkles of rain were finally enough to get these males moving!
Ambystoma maculatum
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Seán Callahan retweeted
6 Feb 2021
So it begins! Earlier than in past years and so far only the opaque variant. Ambystoma maculatum
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5 Feb 2021
Might as well emerge from my twitter hiatus for this. I'm so fortunate to have these fantastic people as co-authors, especially being my first publication 🙌
29 Jan 2021
In a period with a lot of negatives, it feels good to end a week with a paper acceptance. It's been awesome to have had great co-authors: @jcroweriddell, @scaleyhan, @jaimiAgray, & Alison Davis Rabosky to work with on this. 🐍🐍🐍 #diceCT #herpetology
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Seán Callahan retweeted
12 Feb 2020
Our mudpuppy phylogeography paper is out in the Journal of Herpetology! So grateful to my amazing collaborators on this project.
journalofherpetology.org/doi…
[should be Open Access soon, or email me if you'd like a copy!]
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Seán Callahan retweeted
12 Dec 2019
I had to get creative when setting up this #diceCT scan. The #snake will be chasing the #bat all night long in our scanner! #zoology #CtScanning @UMichEEB #oVertTCN #herpetology #mammalogy @NikonMetrology
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Seán Callahan retweeted
3 Dec 2019
#Sharks in the morning, #snakes in the afternoon. It's never a dull day when you work in a natural history #museum @scaleyhan #herpetology #zoology
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Seán Callahan retweeted
18 Nov 2019
WOW! It is so cool to see our research in cartoon form! Thanks @PurpleNeety for such an awesome drawing!
Did you know there are sea snakes in the twilight zone? Check out our paper below! 🌊🐍
12 Nov 2019
New Austral Ecology research. Diving #seasnakes - how low can you go? 250m in the #DeepSea!! @wileyecology @EcolSocAus @jcroweriddell #snakes
bit.ly/2Q8d7Rq
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Seán Callahan retweeted
31 Oct 2019
Look at the second row of teeth for this Necturus punctatus larva - also Happy Halloween!
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