this is a person 
a man skateboarding in a pool
man riding on skate board
Guy skateboarding in park
Skateboarding on the halfpipe
Man skateboarding at a skateboard park.
man on the skateboard
man on a skateboard
the man is sideways
man is on the edge of a pike
person on a skateboard doing tricks
a young man is riding a skateboard up a ramp at a skate park