A rival to Livyatan melvillei, this giant shark possessed a bite force of 167,200 to 250,000 Newtons. It flourished 300 to 400 million years ago before going extinct due to climate change. It grows to a length of 15m to 18m.

A mid-sized ancient creature that grows between 6m and 8.5m. It uses long tusks to hunt hard-shelled squid and other organisms. It has an extremely hard head but is a very slow swimmer.

Known as the ruler of the Late Cretaceous seas, it resembles a crocodile and is a fast swimmer. It grows between 13m and 18.5m with a bite force of 982 to 1,285 million Newtons.

An ancestor of whales that lacks teeth and swallows its prey whole. It grows between 9m and 14.7m and is a slow swimmer.

A Paleozoic creature and an exceptionally ugly fish. It has numerous teeth and a bite force of 6.79 to 120 million Newtons. It grows to a length of 5.8m to 9.9m.

The ancestor of the sperm whale, resembling Moby Dick. It is a rival to the Megalodon, possessing a bite force of 850 to 1,840 million Newtons and growing between 13m and 17.8m.

Toothless and aggressive, it attacks by ramming with its head. It grows between 10m and 15m and is considered an ancestor of whales, similar to Dorudon.

A rival to Kronosaurus, it has a bite force of 1,475 to 2,200 million Newtons. It hunts long-necked plesiosaurs by biting and tearing them apart. It grows between 16m and 19.8m.

An extremely fast swimmer with a bite force of 780 to 890 million Newtons. It attacks by biting through everything with its crocodile-like snout and grows to about 12m to 15.6m.

Possessing a bite force of 1,300 to 1,890 million Newtons, it is a slow but aggressive swimmer that attacks by biting or ramming its head into targets.