Whale sharks are the largest species of fish on the planet. They are among the largest animals to have ever lived. Only blue whales, sperm whales, and humpback whales (all mammals) are larger. The ...

Meet the legends of Earth’s prehistoric oceans, from the pliosaur – a gigantic, gnarly toothed creature – to the ichthyosaur, a majestic and speedy, dolphin-like predator.