A golden trophy in the left corner of the title screen
Complete at least 1 game mode.
Barracuda
Bite the tail of a barracuda four times to shrink it. You can then eat it carefully.
Bugs
After you gain enough levels you will be able to jump out of the water and eat flying bugs. To get extra points, eat an entire swarm. You can also earn style points by flipping in the air. Be careful, as you will get stunned if you land incorrectly and be vulnerable to predators.
Extra lives
An extra life is awarded at 6,000 points, 12,000 points, and then every 12,000 points following that.
Feeding frenzy
Eat fish quickly to fill your frenzy meter. When your frenzy meter is full, you will get double points for each fish eaten. If the frenzy meter is filled twice, you will earn a double frenzy bonus. When this happens, you will get triple points for each fish eaten. If you eat a 2x bonus bubble during a double frenzy, you will get six times the normal point value of the fish.
Growing
Eat fish smaller than yourself and avoid the larger fish. A predator is larger than you and will eat you. You will lose a life when eaten. To get larger, eat smaller fish. Your fish will say "Yummy" when you have grown. To get more points, bite the tails off larger fish or eat an entire school of fish.
Mermaid
Complete a level without dying and a mermaid will appear. She will drop starfish bubbles that can be quickly collected for extra points. The mermaid always appears from the last side where a fish was eaten.
Mushrooms
Mushrooms are released when the alien intruder hits a bombs near the surface.
Pelicans
Eat a mushroom just as a pelican flies over it to shrink the bird. You can eat shrunken pelicans.
Screen savers
Six underwater screensavers can be unlocked by building points in your food bank. You will earn a point for each fish you eat when you complete a level.
Starfish bubbles
Starfish bubbles are worth extra points, but will not help you grow.
The Intruder
Finish the entire story mode (there will be an announcement that "The Intruder" is available for playing)
Time bonuses
There are bonus timed levels that start between levels that allow you to earn time bonuses. You will have one minute to eat 100 fish, bugs, or other targets. After all 100 are eaten you will earn the bonus. Note: Collect the clocks when they appear to add three seconds to the timer.
