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
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PDF] Energetic cost of active branchial ventilation in the sharksucker, Echeneis naucrates. | Semantic Scholar
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Metabolism, Energetic Demand, and Endothermy J.K. Carlson, K.J. Goldman, and C.G. Lowe. - ppt download
![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)