You can progress in the game by eating as much as possible, all while completing missions, to unlock more characters. The more you eat, the more you amass growth points, the faster you will unlock the next shark! You can track your progress of unlocking new sharks for coins from the progression bar at the bottom of the Shark Select menu.

Growth points also increase the level of your equipped shark. Growing your shark will increase its health and size, making it easier to chomp on enemies! The shark's points multiplier also increases with the size.