Here is the full list of all 10 Surf World Series trophies - there are 4 bronze, 5 silver and 1 gold.
Complete all Challenges
Wipeout 500 times
Perform all the advanced air tricks
Ride the infinite wave for over 10 minutes
Complete all Single Player Events
Score over 100,000 points in a single Event
Visit all the locations and times of day
Customise 10 boards
Perform a very hard air trick at night
Come first in all Multiplayer Game Modes