Shhhaaarrrrkkkk!!!
Jaws puts you on a boat in a delicate oceanic region, inhabited by jellyfish, rays, sharks, and the biggest great white you have ever seen. From the ship, you cannot do much against the sea creatures, but when you find something in the water, you jump out to explore. To take out the sea creatures and collect items, you are armed with an unlimited harpoon gun and most creatures take 1-2 hits, unless you find a shark. Baby sharks take several hits, while Jaws takes many more than that. You can dock at the ports and use conch shells as currency to purchase sonar and stronger weapons.
The mini game of bombing jellyfish is fun, but in general, the whole game is put together well (except the music and sound effects).