The urinary system of the porpoise, like other mammals, consists of paired kidneys, ureters, a urinary bladder, and urethra. Unlike most other mammals however, marine mammals have reniculate, or lobed, kidneys.

Published in Harbor Porpoise

The urinary system consists of the kidneys, ureters, bladder, and urethra. The most striking difference between the urinary system of marine mammals and that of most terrestrial animals is that marine mammals have reniculated kidneys.

Published in California Sea Lion