the.com/cetacean
The order of mammals that said land was a phase.
means A whale, dolphin, or porpoise — a mammal that went back to the sea and never looked back.
from From Latin cetus ('large sea animal'), borrowed from Greek ketos, the word for whales and sea monsters alike — the same root surfaces in 'Cetus,' the mythical sea beast and constellation. The scientific order Cetacea was built from that ancient root to name the group, fittingly reusing a word once reserved for monsters to describe animals that are, in fact, former land mammals.
- ancestry
- Descended from small hoofed land mammals, like deer
- closest relative
- The hippopotamus, genetically speaking
- breathing
- Voluntary breathers, they can choose to suffocate
- two groups
- Toothed whales hunt, baleen whales filter-feed