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Dr Tim O’Hara

@drtimohara.bsky.social

I am a marine biodiversity scientist at Museums Victoria in Melbourne Australia. I love biogeography and evolution.

Dr Tim O’Hara @drtimohara.bsky.social · 23/07/2025

New paper in Nature: global evolutionary biogeography of my favourite animals. www.nature.com/articles/s41... theconversation.com/five-arms-no... www.theguardian.com/environment/...

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Dr Tim O’Hara @drtimohara.bsky.social · 23/01/2025

A preprint of our latest global marine biogeography, presented at DSBS17, is available at doi.org/10.21203/rs....

aus01.safelinks.protection.outlook.com

Spatiotemporal faunal connectivity across global seafloors

Our knowledge of biogeographic patterns and processes in the deep sea has been limited by the lack of integrated datasets that cover its vast extent. Here we analyse a new global dataset of genomic DN...

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Dr Tim O’Hara @drtimohara.bsky.social · 04/01/2025

It’s out! A new faunal inventory for deep sea habitats around cold seeps off Costa Rica, including sone cool brittle-stars, see zookeys.pensoft.net/article/1343...

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Dr Tim O’Hara @drtimohara.bsky.social · 25/12/2024

Here is the long lost brittle star Asteroschema monobactrum, last collected over a hundred years ago, from the SE seamounts of Chile. Merry Christmas!! #oceancensus #museumsvictoria

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Dr Tim O’Hara @drtimohara.bsky.social · 10/12/2024

I have found old friends on seamounts in the SE Pacific, same species as from seamounts off New Zealand & Australia. Never ceases to amaze me how far these animals have dispersed across open oceans. #taxonomyworkshop2024-ID #chile

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Dr Tim O’Hara @drtimohara.bsky.social · 09/12/2024

Woohoo, the Cocos (Keeling) Island seamount makes the front cover of DSBII. Mapped for the first time by the RV Investigator in 2022. Now I had better finish the macroecology paper …

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Reposted by Dr Tim O’Hara

Chris Mah @echinoblog.bsky.social · 06/12/2024

The @oceancensus.bsky.social #taxonomyWorkshop2024 in Chile CONTINUES! Here, drtimohara.bsky.social, world ophiuroid expert from #museumvictoria studies ASTEROSCHEMA one of the most widespread #deepea serpent stars! #echinoday How many new? species will we find?? #falkor

Australian man smiling wearing a white shirt with a jar containing a snake star on a coral

A snake star with long curled arms on a pink coral

man in white shirt with jar containing snake star on pink coral in foreground, background with microscope and sample jars

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Reposted by Dr Tim O’Hara

Chris Mah @echinoblog.bsky.social · 06/12/2024

Also a quick note to those who are following.. THIS is Dr. Tim O'Hara's proper Blue Sky account @drtimohara.bsky.social‬ · the other one is some other guy with the same name!

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Dr Tim O’Hara @drtimohara.bsky.social · 29/11/2024

Today’s marine biogeography thought: the first brittle stars to reach remote oceanic islands are Amphipholis squamata & Ophiactis savignyi, both polyploids! Super-dispersers!

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