A jet ski is a personal watercraft that can be ridden by one to four people at once. The first of these personal watercraft vehicles were introduced in 1987.http://www.articlealley.com/article_62597_32.html Most jet skis have seats and are intended for recreational purposes. However, stand-up models exist for racing and competition purposes. Jet ski manufacturers include Seadoo, Kawasaki, Honda and Wave Runner.http://www.pwc-traderonline.com/

The majority of jet skis are aimed at recreational consumers and have user friendly features including padded seats and storage compartments for sunglasses, sunscreen, wallets and other valuables. Some models may also have larger fuel tanks for extended range so they can be used as transportation between two or more locations.http://www.articlealley.com/article_62597_32.html

Statistically, jet ski riders are not significantly more likely to be in an accident than operators of other types of watercraft. However, accidents involving jet skis have a higher likelihood of serious injury or death. Personal watercraft do not have protective walls and railings like larger deck boats or yachts, making the chance of injury higher when colliding with boats and other obstacles. Many jet ski manufacturers also provide an engine stop feature that prevents the craft from continuing to operate after a rider has fallen off the machine.http://www.safetyresource.org/water_safety/jet_ski_safety.html

An expert jet ski rider is shown performing a series of acrobatic stunts on the water. They use waves as jumps and launch ramps in order to perform backflips and spins. Some tricks involve letting go of the handlebars and other risky moves, though the rider is still shown completing each manoeuvre successfully.