The cruel sea

it is a mini dinosaur documentary about opthalmosaurus and leopleurodon. it starts 120 mya (millon years ago), with elazmosaurus catching fish. then a shoal  of opthalmosaurus migrate to shallow water to give birth, but one is bitten in half by a leopleurodon while it's pups escape to the reef. at night on the shore, elazmosaurus are laying eggs. dimorphodon eat some of the eggs. meanwhile, the baby opthalmosaurus are hunting squid. the next day, megalosaurus are disturbing the dimorphodon, but soon will have a bigger meal. the leopleurodon encounters another leoplurodon and is badly injured. it later gets stranded and eaten by the megalosaurus. the episode ends on a more positve note, because the opthalmosaurus pups have survived, and leave the reef. find out more on the walking with dinosaurs wiki.