There is 1 species recorded in Tanzania: Physeter macrocephalus. This unique whale is the species that was featured in the classic novel "Moby Dick".

There is 1 species recorded in Tanzania: Kogia breviceps. Like the bigger sperm whale the skull of this whale is asymetrical in that one nostril is much larger than the other. Look at the dorsal view of the skull (left in the picture; ventral view is right).