Shark! Hunting the Great White Tips

Level 7:
When you first dive, go down to the bottom, take out your weapon, and just wait. Do not move because the Great White will come to you. He is not that difficult to deal with if you stay at the bottom because most of the time he cannot swim down that far, but will go over top of you. Just take your time. About three shots are required to kill him, depending on which gun you use. When heis belly up, go northwest with the little dot just barely above the west direction on your compass. When you can go no farther, turn southeast with the little dot on the red energy bar. Keep going this way and you will reach a crater. The mini-sub is in the crater. Note: There is also a Tiger Shark. It is best to take care of him before you go in the crater, as it is very dark in there.