Once you've finished the story mode there really isn't much worth doing afterwards.
Gameplay: The gameplay is fairly basic and attacking any life that happens to be in the water the same time that you are seems to be a novelty and you think that you can go on forever eating people and tearing off their limbs watching them bleed to death, this doesn't last as the AI is rather unchallenging so there isn't as much pride in the kill as you would think. One of the main problems is that the game is too easy, even a casual gamer like me managed to get through the story in just a few hours.
There is also the problem with Jaws himself, the swimming along with the "Smart" camera can be very annoying as the camera can go above the water at inoppurtune times when you are being attacked by sharks or those bastard research machines (of which there are far too many of) and Jaws also has the tendency to get stuck alot rather than clipping around the area so that Jaws can get out.
Graphics: Some of the underwater landscape and the above water reflections, the light reflecting off Jaws are the strong point of the graphics here as well as some sea life, but the actual people look worse than pre Grand Theft Auto 3 characters, the mouths of the characters don't open at all so when they are talking in the cutscenes you think that you're watching ventriliquists throughout the game infact the only characters opening their mouths are the sea life.
Sound: The sound seems to be made up of recycled stock files especially when Jaws is biting and eating, the ambient sounds are also very limited so its like the same sounds looping every few seconds and because of this I never really felt immersed into the environment.
Other annoyances include (well the one that everyone mentions) the script of the people you are eating must consist of just a few lines so all you here as a shark is "I gotta get away", "I think he's dead" (even though you are clearly visible destroying something alive and kicking) and finally "I don't wanna die", what puzzles me is that sometimes the humans on this game can say these lines perfectly when underwater and without a head to scream out of.
Value: While it is fun to kill whatever you can as a shark it can get particularly dull after a short time and once the story mode has been completed there isn't really much worth doing afterwards, there are side challenges but by the time you have completed the story mode you will have probably made yourself the baddest fish you can be so there isn't much point in doing the uninteresting challenges.
I've given this game 5.3 because I believe there was once a decent game here when appaloosa was making it Sole Predator but most of the quality was probably lost (along with any multiplayer) when it was decided that it was to be made into a Jaws game.
Hope this was useful to you.