Even the biggest, fastest, and fiercest predators start out small. Baby sharks are cute, but they need to grow up fast. Out of more than 500 species of sharks, not one parent sticks around to help raise them. Sharks are found in every ocean across the planet and have evolved in extraordinarily different ways to carry their young and give birth - and for baby sharks? To thrive. Baby Sharks, part of Sharkfest, tonight at 8pm, on National Geographic WILD UK. | National Geographic UK