There aren't words to describe the thrill of spotting a submarine suddenly burst out of the sea. Given the choice I'd take a submarine over a whale, and I certainly wouldn't thank you for dolphins. Overrated as a spectacle really. You could wait all your sea-faring days for a submarine to come along. Or a fire or a sinking, a love affair or a situation that necessitated a helicopter. Like buses of course they've be known to arrive all at once. Often in cahoots.