Benjamin Carr, Ph.D. 👨🏻‍💻🧬May 26, 2025
We probably inherited our #joints from… a #fish
#Cartilaginous fish form the same style of joint that we do, while jawless fish don't.
Humans, other land #vertebrates, and jawed fish have #synovial joints. The lubricated cavity within these joints makes them more mobile and stable because it allows for bones or cartilage to slide against each other without friction, which facilitates movement.
https://arstechnica.com/science/2025/03/we-probably-inherited-our-joints-from-a-fish/
We probably inherited our joints from… a fish

Cartilaginous fish form the same style of joint that we do, while jawless fish don’t.

Ars Technica
Stefan F. WirthDec 1, 2023

It is amazing, when a #sealion kills a larger #blueshark, and it is of scientific importance when it turns out that #leopardseals even regularly hunt and eat #cartilaginous #fish.

Blog: StefanF.Wirth

Video (2023):
https://www.instagram.com/reel/CysF0Pzurrb/

C. Fallows et al. (2015):
https://doi.org/10.2989/1814232X.2015.1013058

K. Van Der Linde et al. (2021):
https://doi.org/10.3389/fmars.2021.795358

Photos

1: author Mark Conlin/NMFS, public domain U.S. 
2: first paper above
3:author cyfer13, Creative Commons Attribution 2.0 Generic license