So, I tried your game and I would say that it was fun to play! I complete all 8 stages and I enjoyed it.
I will explain and give you my opinion and experience from playing Zango's SA. As well as rating your project over.
Graphics 6/10
The graphics overall are not bad. I usually hate those types of graphics in games because they look so cheap to me. But for your game however,it works and fits your theme well.
Gameplay 8/10
The game play was fun and the controls were good. It wasn't awkward and the controls felt smooth as well as easy to work with playing it on the phone. The shark was very precise on hitting me so it felt like a good thrill to constantly avoid and run out of reach from that savage shark. I also enjoy the power up box, it added some fun factors to it, besides just jumping through the level. Using the rocket to fly through the levels was also fun and being invincible temporally was nice against that aggressive shark.
Story/Theme 7/10
The story was okay, but at least I know whats going.The music was very nice and soothing for the opening. The menu was good and easy to follow. The only problem is that I just didn't like how small some things looked. I Know theres a lot of stuff in the game and you want it to look good on the phone, but I felt that the title should of been a bigger to stand out and everything in the gameplay (except the shark) should be medium size or a bit more bigger. Last, the menu to could be a little more organized. But it was easy to follow and understand.
Overall score: 7.7
Update:
I took a look back at your game and played it. I decided that it's actually a really great game, and the graphics are actually very nice (i give the graphics an 8). If this is your very first game you made and sold, you did a wonderful job. This can really reach out to alot of kids to play as well. It's very fun and entertaing and thrilling to play and it won't be so difficult for them to play either.
Overall score is a 8.3 :)