Captain: Crain, David
Sharks have everything a scientist dreams of. They’re beautiful―How beautiful they are! They’re like an impossibly perfect piece of machinery. They’re as graceful as any bird. They’re as mysterious as any animal on earth. No one knows for sure how long they live or what impulses―except for hunger―they respond to. There are more than two hundred and fifty species of shark, and everyone is different from every other one.