Claim: When considering characteristics of sperm whale (the only living species of the genus Physeter which is a genus of toothed whales) clicks, the click types usual has a high directionality, a duration of pulse of 0.1 millisecond and is used to search for prey.
Evidence: It is the only living member of the genus Physeter and one of three extant species in the sperm whale family, along with the pygmy sperm whale and dwarf sperm whale of the genus Kogia. Physeter is a genus of toothed whales. High 0.1 Searching for prey