Water splashes up against their toes, which are firmly planted on the board. Arm and back muscles tighten as they push themselves forward with their paddles. Thus do novice paddleboarders from Long Beach Adventure Tours ride slowly glide their way across Long Beach, from the shore of the Hotel Maya to the behemoth hull of the Queen Mary. But they aren't the only patrons out for fun in the sun. On the beach nearby, students carrying surfboards rush into the water to catch their first waves, as a certified instructor shouts out encouragement and instructions behind them. Further out in the water, a colorful arched sail cuts through the air, sending the kiteboarder holding the reigns jumping and twisting into the air. Whatever the sport or activity, instructors that live and breathe water activities unleash their expertise onto both novice and experienced students.