Across
- 3. Exploring deep underwater with a portable air tank.
- 4. Using a large kite to pull you across the water
- 6. Navigating a rough river in an inflatable boat.
- 8. Flying a light, non-motorized aircraft by shifting your weight.
Down
- 1. Swimming near the surface with a mask and a breathing tube.
- 2. Jumping from an airplane with a parachute
- 5. Riding a board on the face of a moving wave
- 7. Jumping from a high place attached to an elastic cord.