Hey!
I have this weird phobia for underwater creatures of many sorts in games. It all started with the eel in Jolly Roger Bay, when it popped up in my screen and scared me shitless, a lot of years ago.
The giant Slaughterfish in Oblivion scared me for some reason, the huge underwater boss in Twilight Princess scared the hell out of me, too. Heck, I was even scared of the Firaxan sharks in Knights of the old republic.
I can't help but feel some degree of fascination for these things, though, so I'm wondering if you guys have examples of games including large/scary underwater creatures/bosses? If so, what game(s) and what creature(s)? :) (If you remember, what part of the game does it appear in?)
...Pics? =D