A huge wave washed all of your shipmates overboard; now you have to rescue them before a terrifying monster eats them. You'll have to throw life-rings to them before they die.
Click on the people in the water to throw them a life-ring. If you manage to rescue enough of them, your score will increase and you'll move on to the next level. Don't give the monster enough time to devour your shipmates. If the rectangle in the bottom right which says 'Eaten' fills up with blood, then you'll lose.