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
![Structural adaptations for ram ventilation: Gill fusions in scombrids and billfishes - Wegner - 2013 - Journal of Morphology - Wiley Online Library Structural adaptations for ram ventilation: Gill fusions in scombrids and billfishes - Wegner - 2013 - Journal of Morphology - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/46d870ad-cbae-4e38-b3ff-2ff4bff712fa/mfig001.jpg)
Structural adaptations for ram ventilation: Gill fusions in scombrids and billfishes - Wegner - 2013 - Journal of Morphology - Wiley Online Library
![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)
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
![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)