Obligate ram breathing is kind of mind-blowing. They have to swim to flow water through their gills because their gills have no muscles to flap like most fish have.
Only a few sharks are obligate ram breathers, though. Many species are able to take breaks from swimming.
notsure@fedia.io 1 day ago
...300 million years, can't sit still, smh...
aeternum@lemmy.blahaj.zone 1 day ago
The perfect predator. Can’t survive out of water. What are sharks even doing??
brown567@sh.itjust.works 1 day ago
youtu.be/2vVQYdG0YlU