Get points
After you do a trick off a ramp press start and you will rack up
awesome points!
Racing on a dolphin
At the Main Menu, choose Start Mode and choose a waterscooter and
the Dolphin Park. While racing, take each ring and perform all
stunts. If this went well, you will hear a dolphin sound. Now, on
the normal difficulty level, choose Championship mode. Take the
warm-up option. If you choose the waterscooter, then hold the
joystick DOWN and press A until you start the race.
Get 3 Baby Dolfins
At The Title screen,Go To Championship,Pick the
Level,Easy,Hard,Normal,Then Pick Warm Up And Do Everything The
Dolpin does,If You Did It Right,The Dolpin Will Do A flip at the
Dolpin Park Sign,Do This 3 Times And A Baby Dolpin Will Come After
3 Times,"If You Did What The Dolpin Did."When You Get It 9 Times
And You Did What The Dolpin Did."Only 3 Baby Dolpins Can
Come."
Ride a shark
Go to the practice mode and don't miss a single ring. When you are
done get out to the main menu and do a 360 on the joystick 10 full
times. If you are successful you will hear a load laugh.
Use a submarine
In the player selection screen press A, B, A, Z, B, R, L, A, A, B,
Z, L, A, Start. This cheat will let you ride a small yellow sub
(Twilight City is the best course to use it in).