The head of the sperm whale measures between one-quarter to one third of the body length. The large head contains a huge cavity called the spermaceti organ. The color of sperm whales is variable, from brownish grey to black.
Whitish areas occur around the lips, and individually at the front of the head and around the naval.
The skin of the sperm whale is extremely thick, reaching nearly 15 inches on the back and sides. Wrinkles run horizontally over the rear two-thrids of the body. Whale Songs is a product of Lance Leonhardt, Black Box and Oasis Telecommunications. Designed by Black Box , published by Oasis Telecommunications .