Meet the brightest sea creatures – they can solve puzzles communicate big time and have the neatest ways of keeping out of trouble. Octopuses have brains in their arms – that’s a lot of brains. Blue Whales make sounds that are louder than a jet plane. Decorator Crabs hide by dressing up. Also discover how dolphins use echolocation parrotfish snooze in a sleeping bag of mucus great white sharks hunt and more – the wild wacky and colourful ways of marine animals.