Buccal pumping is more energy intensive than ram ventilation. Sedentary, bottom-dwelling sharks generally use buccal pumping to move water over to their gills compared to more active sharks, who will use ram ventilation and swim to force water to their mouth and gills.
Buccal pumping is more energy-demanding than ram ventilation. Sedentary, bottom-dwelling sharks typically employ buccal pumping to move water over their gills compared to more active sharks who utilize ram ventilation and swim to force water into their mouth and gills.