Cetaceans are divided into
3 suborders:

TOOTHED WHALES (ODONTOCETI) with 5 FAMILIES
Dolphins (Delphinidae),
Beaked whales (Ziphidiae),
Sperm whales (Physeteridae),
Narwhal & Beluga (Monodontidae)
Porpoises (Phocoenidae)

BALEEN WHALES (MYSTICETA)
WITH 4 FAMILIES
Right whales (Balaenidae)
Pygmy Right whales (Neobalaenidae)
Grey whales (Eschrichtiidae)
Rorquals (Balaenopteridae)

EXTINCT ANCIENT WHALES (ARCHAEOCETI)
The ancient whales were
primitive cetaceans that lived on earth
from 50-20 Million years ago.
They lived amphibious in shallow coastal waters.
Whales & dolphins
around Madeira (island)
Dolphins
. . . & more
Ilustrations by Katrin Wahner