Sperm whales eat large squid, octopus, fish, while squid, octopus mainly eat shrimp, crab, and other crustaceans and fish. Each day, they consume food equivalent to 3 to 3.5 percent of their body weight.

Male whales also feed on gun squid, although the preferred prey is usually larger, such as king soursop squid. A 12-meter-long, 200-kilogram king squid was once found intact in the stomach of a sperm whale.

Expanded Information

Sperm Whale Morphological Characteristics: Sperm whales have a huge head, small jaws, and teeth only in the lower jaw, and can reach a length of up to 18 meters and a weight of more than 50 tons, making them the largest toothed whales, with the head occupying up to one-third of their body, and no dorsal fin. The head is long and large, its length can be up to about 1/3 of the body length, but the lower jaw is extremely small, rather disproportionate. The rounded, blunt muzzle protrudes 1.5 meters from the lower forehead.

The blowhole is near the front of the head to the left, resembling a slightly elevated slit. The eyes are very small, almost "negligible". Although there is no functional teeth in the upper jaw, but the gums are pierced by the large teeth of the lower jaw and can be embedded with the lower teeth of the molar cavity; maxilla, frontal bone and temporal bone are concave downward, forming a large groove, filled with cetacean wax, resulting in the top of the head bulge, the whole head shape like a barrel.

Baidu Encyclopedia - Sperm Whale

Baidu Encyclopedia - Sperm Whale Family