The Whitetip Reef Shark : Most shark species rely on ram ventilation and have to keep swimming in order to breathe. But the whitetip reef… | Instagram
![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) 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)](https://pbs.twimg.com/media/Dr-bikSWwAAh2tM.jpg)
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)
![The transition between branchial pumping and ram ventilation in fishes: energetic consequences and dependence on water oxygen tension | Semantic Scholar The transition between branchial pumping and ram ventilation in fishes: energetic consequences and dependence on water oxygen tension | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/2f06d020b9e1c6f0abfd1b6ba085f57dbb402d0f/4-Figure1-1.png)
The transition between branchial pumping and ram ventilation in fishes: energetic consequences and dependence on water oxygen tension | Semantic Scholar
Shark Research at University of Miami - A pump is placed in the mouth to allow water to flow over the sharks gills and simulate ram ventilation. | Facebook
![Save The Sharks on Twitter: "Did you know that sharks, unlike other fishes, do not have an operculum, which is a hardened protective lid over the gill! Sharks have two different ways Save The Sharks on Twitter: "Did you know that sharks, unlike other fishes, do not have an operculum, which is a hardened protective lid over the gill! Sharks have two different ways](https://pbs.twimg.com/media/Ex-5vDOWgAgizpY.jpg)