Dr. Catherine Macdonald
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drcatmac.bsky.social
Dr. Catherine Macdonald
@drcatmac.bsky.social
Marine scientist and teacher Field School & University of Miami. Director of sharktagging. NatGeo Explorer. Shark & ray ecology, biology, conservation. She/her.
Also this really isn’t super-esoteric information available only to experts. There are details about sharks that media gets wrong that are genuinely nuanced or obscure, but this is literally the first result if you google “hammerhead shark catch and release”:
September 26, 2025 at 12:29 PM
Here’s what claspers look like, with and without spurs deployed!
July 24, 2025 at 7:02 PM
I promise I do genuinely understand that this is not a distinction that’s important for the vast majority of humanity, but: claspers! Spurs!
June 28, 2025 at 12:37 AM
April 8, 2025 at 6:32 PM
For any young scientist feeling sad about GRFP results today!
April 8, 2025 at 2:21 PM
Friendly reminder that I am 90% a poster about sharks and conservation, 10% shit posting to get on @whysharksmatter.bsky.social’s last nerve.
December 1, 2024 at 12:21 AM
There are so many incredibly smart, serious people following me that I’m concerned I’ve accidentally intellectually catfished you, so here’s a refresher on what you can expect from me:

-shark-related content
-conservation content
-teaching-related content
-memes roasting sandbar sharks
November 17, 2024 at 9:10 PM
@whysharksmatter.bsky.social
Paging Dr. Shiffman
November 15, 2024 at 11:16 PM
July 5, 2023 at 9:59 PM