Water Sports

Canoe & Kayak (Paddling) Canoe | Kayak (Surf Kayak | Inflatible Kayak | Sea | Slide) | Rowboating | Rafting | Duckies | Paddleboarding | Squirt Boating/Kayak | Whitewater Boarding (River boarding) | Whitewater Sledging
Human Powered Boats Paddle Boats | Bicycle Boating | Walking on Water | Human-Powered Hydrofoil
Wind Powered Boats Sailboats | Kite Sailing | Parasailing | Paragliding ? | Paraboating | Parapenting

Pulled Water Sports Waterskiing (Hydrofoil | Barefoot | Cable | Personal) | Wakeboarding | Wakeskating | Kneeboarding | Bodyboarding 
Surfing Surfing (Great Lakes Surfing | Powered Surfboard | Kite) | Surf Kayak/Wave Skiing/Surf Ski  | Windsurfing | Riverboarding | Surf Life Saving | Skimboarding/Skidboarding
Jumping Diving | Coasteering | Barrel Jumping | Canyoning

Scuba Diving  Scuba Diving (Technical Diving | Free Diving | Skin Diving | Cave | Wrech) | Diving with a Hard Suit | Underwater Transport | Underwater Rock Climbing/Abseiling
Underwater Recreation Swimming (Synchronized Swimming) | Snorkling | Underwater Bicycling | Underwater Skiing | Underwater Mountain Biking

Powered Boats Motorboat | Yauhting | Jet Ski | Hovercraft | Personal Hovercraft | Jet Boat | Bell | Submarine | Flexible Sub | Underwater Airplane | Float Boat

Inflatible Fun Flatwater Toobing | Water Trampoline | Water Seasaw | Water Slides
More Water Fun Birling | Fishing | Rock Skipping
Competition Underwater Hockey | Underwater Rugby | Water Polo | Birling | Log Riding | Tai Chi

Water
Feet Swimming | Snorkling | Scuba Diving | Technical Diving | Walking on Water HydroBronc $2500 + others
Wheels Paddle Boating | Bicycle Boating | Underwater Bicycling | Underwater Mountain Biking
Board Skimboarding~ | Skidboarding | Paddleboarding | Surf Kayak
Craft Canoeing | Kayaking | Rowboating | Rafting | Inflatible Kayak

Waves/Current A form of skiing where you get pulled by waves? | At water's edge
Waves/Current Surfing~ | White-water boarding

Water Jet Ski | Motorboat | Hovercraft | Jet Boat (fast boat for group) | Submarine | Flexible Sub
Water Underwater Airplane 10mph,1500feet,20miles,PS03 www.deepflight.com | Hydrofoil | Float Boat

Hybrid powered on water?

http://uk.geocities.com/osfuk/osf/links.html Extreme links
http://bungeeconsultants.com/multi/extreme.html

Skate sailing  | Shovel racing | Surf skiing | Bodysurfing



<>http://watersports-extreme.com/main.shtml

Wave surfing:There's a "wave surfing" ride at the Texas water park Schlitterbahn, that's pretty close to this idea. It's a high velocity sheet of water, where you surf down a foam rubber slope on a small "body board". The [link] doesn't do it justice, but I think you'd be pleased.
I had never heard of the ride or Schlitterbahn, until seeing it on the Travel Channel last week. They also have a couple of UPHILL water tube rides!

http://www.halfbakery.com/idea/skim_20board_20park#1060180515