If I lived in the ocean, I would be a dolphin. Dolphins are very intelligent and adaptable. It seems that all animals, fish and mammals, are vulnerable in the ocean. Even the biggest and meanest sharks can fall prey to a fisherman's line. I once watched a video where the largest whale (Blue Whale) in the world was devoured by a pack of "tiger sharks." The sharks followed the whale until it was exhausted. Then they attacked one after another.
Dolphins can head off a shark. They are more agile and smarter. I've also read stories where Dolphins have saved shark attack victims and drug them to shore.
I want to be a "Dolphin!"
PS I wrote a blog about sharks, check it out and let me know what you think!