Just before I took this, I was hand-feeding a puffer fish! It was one of the strangest things I had ever done. First I picked up a sea urchin off the bottom and held it loosely in my hand. Then the puffer fish came over and started tearing into it! Puffer fish don't care! It was so awesome to watching him tear it apart. They have big and hard teeth, those guys… kind of freaky really. It's the first time I've ever done anything like that.