If you upgrade your movement option to the max (where you get the "jet" thing) and sit in between the smaller fish and the big ones, the smaller ones turn red and charge you, tap the screen and you will use your upgrade to "jet" out of the way. The smaller fish will run into the bigger one causing damage. Sometimes you have to lure the smaller fish back to the big one as they swim away from it. Do not use the electrical upgrade as you will kill the smaller ones and have to lure new ones back.
Also, you can use the green coral to recharge your health (swim into them and it will discharge a green cloud), but you can only use each coral twice (it will go from green to gray and recharge back to green) after you use it the second time it will disappear. You have to wait a few minutes between recharges as well. If you swim into one for the first time it will give you a little health wait about 1 - 2 minutes and then do it again. If you dont wait it will not give you more health.
I have not been able to beat the level as of yet. As far as I know there are three large fish to beat. Gimme about another 10 minutes and I will...
On a side note, I am a little disappointing at the game....
I give the game idea / plot 5 stars. (Very original, it not a copy of something else with different "clothes")
Game play 4 stars. (the only thing wrong is that when swimming you are right next to the edge of the screen, if you stayed in the middle it would be better)
Graphics 5 stars
The last category I dont know what to call, but I have the same problem with the South Park game. I finished it after about 2 hours of playing (1 hour a day for 2 days). Now I know it was only $10, but for that I would expect something a little more. I only spent $29 on God of War II and it took me nearly 60 total hours to finish that. Related to that is the inability to play it again. Sure it still works and I CAN play it, but why? Nothing will change other than being able to paint my bug a different color.
I dont know why but I feel "used". Like someone just made the game as a way to lure me into buying the Mac or PC version. Some sort of marketing ploy to promote something else. Again, the same goes for the South Park game... another gimmick to promote something else.
Just my .02
