Immediately after the hook is the white water, where the wave implodes.
White water may be so frothy that it is impossible to float, or even swim, to the surface.
It is popular with tourists who enjoy activities such as walking, hiking, horse riding, white-water rafting and climbing.
These available out-door activities include deep sea fishing, boat cruising, snorkeling, scuba diving, surfing, windsurfing, sea kayaking, white-water rafting, forest canopy tours, horseback riding.
The final 5 mi contained less white water but still had a rapid current with many swirls and whirlpools.
The river is heavily used for a range of recreational activities including swimming and white water canoeing.
Outward-bound activities are a high priority, such as hill-walking, orienteering, white water canoeing, sailing and so on.
The basic idea is to position the surfboard so it is just ahead of the breaking part (white water) of the wave.
