What is conservation? In the last video, we learned about the sea and the oceans, and time many many things live in it. In this video, I mentioned that some animals don't live in the sea, but can rely on it for survival, such as the polar bear, sea otters, seals and penguins. penguins are sea birds, but they're flightless, they live a land for part of the year when they're nesting and spend a lot of time at sea hunting for fish. But there are lots of other sea birds. Sea birds are birds that spend most of their life at sea. Some fly a lot, like this wandering albatross. It has the largest wingspan of any bird, and can reach 3.5 meters. This bird can fly all around the world. Some birds even sleep while flying, and some sleep on the sea, like goals. All sea birds, however, have to lay their eggs on land, therefore we often find sea birds on islands and cliffs, like puffins. These albatross are black-bride albatross, sea they have eyebrows. These guys pair up for life and lay their eggs on land in nests made out of mud. Gannits are another sea bird, they can dive very very fast for fish. And this is the Sandwich Turn. Can you guess where it's named after? So although sea birds don't live in the sea, many rely on it for their food, and therefore the sea is a very very important habitat for birds.