- Narrator: The newborn pups have just a few seconds to reach the surface and take their first breath.
- [first lines]
- Narrator: The most fearsome predator of the Jurassic is watching his prey. Peering through the water, the carnivore fixes on his unwary victim, waiting for the perfect moment to strike.
- Narrator: [about the Lipleurodon] At one hundred and fifty tons, it is the largest and most powerful carnivore ever to live on the planet.
- Narrator: These islands are regularly ravaged by violent tropical storms from the east, that are strong enough to tear away shallow sea beds, smash corals, and kill thousands of marine animals.
- Narrator: Marine reptiles were one of the glories of this ancient time, even though turtles are the only ones left today.