There are 12 inches in a foot, so just divide 540 by 12 to get your answer.
5
The average gray wolf tail length is 13-20 inches.
about 10 1/2 inches
The gray whale is actually black.
A whale
The offspring of whale (including the gray whale) is called a calf.
it is not
no
Blue Whale
Killer Whale
Eschrichtiidae