The are three types of water sports: in the water, on the water, and under the water.
In--
Swimming, diving, snorkeling, synchronized diving, synchronized swimming, waboba, water aerobics, and water polo.
On--
Barefoot skiing, boating, bodyboarding, canoeing, fishing, flowboarding, jet skiing, kayaking, kiteboating, kiteboarding, parasailing, rafting, rowing, wind sailing, skimboarding, skurfing, surfing, wakeboarding, waterskiing, white water rafting, and yachting.
Under--
Underwater wrestling, finswimming, free-diving, competitive scuba, spearfishing, underwater football, underwater hockey, underwater rugby, and underwater target shooting.