Genus Physeter is a taxonomic classification for the Sperm Whale, the largest toothed whale in the world. Synonyms for this genus include Physeter macrocephalus, referring to the whale's large head, and Physeter catodon, which translates to "big-toothed whale". Other common names for this iconic marine mammal include cachalot, a word of French origin, and the Moby-Dick inspired moniker of Leviathan. Despite being a widely recognized species, there is still much to learn about the Sperm Whale and its behavior. Through continued research and conservation efforts, we can ensure the survival of this magnificent creature for generations to come.