Watch Turtles: Prehistoric Beasts

Contrary to our perceptions of turtles as slow and peaceful animals, they are impressively dangerous predators. See their ultimate hunting techniques, perfected by evolution. Then plunge into the sea to witness the great distances that some species travel for their mating ritual. They synchronize with thousands of companions to lay their eggs on the same beach at the same time, every year.

Turtles: Prehistoric Beasts is a 2015 documentary with a runtime of 48 hours.