Beluga whales have a low dorsal ridge but no dorsal fins.
Beluga whales have a low dorsal ridge but no dorsal fins. Less surface area can be used to lose heat to the environment because there is no dorsal fin. A beluga may also more easily swim beneath large ice sheets and find breathing holes without a dorsal fin.
Due to its propensity to cause harm, THE POPULAR MARCHING BAND ""TROMBONE SUICIDE"" ROUTINE IS SO-CALLED.