What lives in the ocean? In today’s lesson we will be learning about all the wonderful animals which live in our oceans. We will be discussing different types of habitats that they live in. There are hundreds and thousands of different animals, from mammals who need oxygen to breathe, to animals like fish who have gills to help them breathe under water. There are even animals called molluscs, some can create their own light in the depths of the ocean where it’s dark. Let’s get started!