It is the largest toothed whale in the world and one of the largest surviving predatory mammals. Known for its huge head and unique water spray holes, the head can account for one-third of the body length. Mainly living in the deep sea, feeding on squid and fish, especially giant squid. Distributed in tropical and temperate waters worldwide, typically active in waters deeper than 1000 meters. Large in size, adult individuals can grow up to 18 meters in length and weigh up to 50 tons. The social structure is complex, with intricate communication methods including various sounds and body language. Extremely strong diving ability, able to dive to depths below 2000 meters and search for food.

Sperm whales are marine mammals belonging to the order Cetiformes and family Spermatidae. With a body length of up to 18 meters and a weight of over 50 tons, it is the largest toothed whale, with its head occupying one-third of its body. The head is huge, the lower jaw is small, and only the lower jaw has teeth. No dorsal fin; Highly capable of diving, it is the mammal with the deepest and longest diving time. Like a fish in size, it breathes through its lungs. Short neck, the head seems to be connected to the torso; Cervical spine healing; The nostrils are spray holes located at the snout end, the forelimbs become fins, the forearms degenerate, the palms become longer, and the number of toes increases, but the toes and claws cannot be seen from the outside; Hind limb degeneration; The tail is like a fish, with horizontal tail fins, and it swings by the tail when swimming.