We meet the largest and loudest creature in the sea The Blue Whale. Although they're as large as 3 buses they're still endangered but can live for up to 90 years. I'm a Fish is a series of animated short films which showcases sea creatures from all over the world - and under the water. It's quirky and it's fun! Each episode features a different fish, mollusc or crustacean who presents itself - quirks, tricks, fascinating design features and interesting facts about their habitat and how they survive in such deep, dark and sometimes dangerous places!