Beluga whale below. They are some of the most interesting creatures I've ever seen. They glide through the water, constantly grinning and more often than not curving over to swim on their backs. Their lumpy bodies (compared to streamlined killer whales) belie assumptions. They move with an easy and languid grace through the water and exhude peacefulness. (Of course, no predators to worry about here...) More than anything else, they just seem to be enjoying themselves immensely.