OceanX - "ShArKS hAVe tO SWIm CONsTanTLy oR ThEY'Ll DIE"—noooo, hashtag #notallsharks! Out of around 500 species, only ~24 species of shark* HAVE to swim constantly. They're called "obligate ram ventilators," meaning
Grey Reef Shark - Carcharhinus amblyrhynchos
Leo Chan Gaskins on Twitter: "Lemon Sharks (Negaprion brevirostris) are very adaptive! Sharks have two ways to breathe - either obligate ram ventilation (must swim to breathe to get water past gills)
Mechanisms of gill ventilation. - Biology Forums Gallery
Do Great White Sharks Sleep? | Animals Cosmos
Special transport: shark
How do Sharks Breathe? - Facty
Gas Exchange
How Fish Breathe: Ram Ventilation, Buccal Pumping – Poseidon's Web
Can a Shark Drown if They Stop Swimming?
The Five Biggest Shark Myths, Debunked - New England Aquarium
Do Sharks Sleep? | Britannica
Category:Sharks | Shark Wiki | Fandom
Shark - Wikipedia
How Fish Breathe: Ram Ventilation, Buccal Pumping – Poseidon's Web
Do Sharks Move When They Sleep? - Shark Keeper
10 Facts That Will Change How You View Sharks - Listverse
Chondrichthyes | Biology - Quizizz
SHARK GILLS | sharks4kidsnew
How do sharks breathe?
