Marooned on Beaver Planet

I was a killer whale, with many others. We were swimming close to the shore.
It took some time to learn to move my entire body to swim as whales do. I vividly recall teaching myself to occasionally surface and breath through my blowhole while keeping my large mouth closed. It took a few tries to get it right. I remember not wanting to get any salt water down my blowhole.
The water was warm and cozy. My pod was traveling out into the deeper ocean. I could feel my huge long sleek body, no arms or legs, just fins and a heavy tail. Even my eyes were on either side of my head.
Being a dolphin was similar, I was trying to do the tail walk thing, also trying to leap out of the water. We traveled along close to the beach, mingling and rubbing against each other.