With every breath you take and every drop of water you drink you are connected to the sea. Our seas and oceans are essential for all life on Earth.The largest mountain ranges, and the deepest canyons can be found underneath its surface, and it's home for a huge variety of weird and wonderful creatures and plantlife. It provides us with more than half of the oxgen we need to breathe, delicious food, and a place to relax, have fun and enjoy activities.