Pretty nice game,but needs this things:
Main Menu Screen - Every game has a menu screen.A good thing to add for a main menu would be adding the features "How to play","High Scores","Options",and most importantly "Play".
Lives - Making you lose points when you collide with a iceberg isn't the way to go.A good thing would be that if you collide with a iceberg,you lose.You go to a menu that says the score you got,and the features "Retry" and "Main Menu".
You should get rid of negative scores.
More obstacles and point items - Adding more obstacles would spice up the game,since only icebergs don't make the thing.Also,fishes give you only a point,so adding another creatures that give you more points would be better.
Powerups would be good.
It needs BGM,and sounds for when you collide with a object or when you get a fish.
It also needs better graphics.
I hope this review helps you to improve.