andywg
Bored into leaving
Only "ram fed" sharks prank (i.e. those that only pass water over their gills by movement).
A notable exception is the nurse shark which has a habit of sitting on the bottom as it has an ability to pass water over its gills without needing movement. There are a number of other species whcih share this trait.
(ps: I assumed by "sharks" you meant those of the Elasmobranch Order, rather than the Cyprinids often refered to as sharks)
A notable exception is the nurse shark which has a habit of sitting on the bottom as it has an ability to pass water over its gills without needing movement. There are a number of other species whcih share this trait.
(ps: I assumed by "sharks" you meant those of the Elasmobranch Order, rather than the Cyprinids often refered to as sharks)