The oceans of the world are filled with so many interesting animals! In fact, there are thousands of different kinds or "species". Some are really huge, like the blue whale, which sometimes grows to be the size of the biggest dinosaurs! Others are very tiny, like zooplankton, which can be smaller than your pencil eraser.

You probably already know about and like many sea animals like dolphins, killer whales, seals and penguins. But there are others that seem mysterious because most people don't really know much about them. Here are some fun facts and beautiful images that will help you get to know these unique creatures a little better.