Author: Jan Scholten
Name: Cetus is Latin for whale, meaning, large sea animal; Greek kētos, meaning "whale" or "any huge fish or sea monster".
Zoology: marine mammals; whales, dolphins, and porpoises.
Evolution: began living in marine environments around 50 million years ago.
Body fusiform, spindle-shaped; forelimbs modified into flippers; hind limbs are vestigial; tail has horizontal flukes; hairless; insulated from the cooler water they inhabit by a thick layer of blubber; high intelligence.
Culture: cetacean bill of rights.