Dolphins are very amazing creatures. I love to watch them play, and swim gracfully. They are by far my favourite animal. Did you know that when Bottlenose Dolphins are born, they can swim immediatly. Their mother will help them to the surface for air. Dolphins are not fish, but mammals. Which means they give live birth, instead of laying eggs. They breath air like humans. On the top of their head is a hole called a blowhole. They use this to breath.