what/where these sports are
A water based activity is based on water. There are many types of water based activities ranging from deep sea diving - water skiing.
Surfing - being carried to the shore on the crest of large waves while standing on a board whilst trying to stay balanced and elegantly poised.
sailing - moving a large object which floats on the water using wind currents on the sheet of the sailing boat
one of the best surfing locations for large waves in the UK is Newquay - Cornwall where they have great health and safety
One of the best sailing spots in the UK to help people under stand is hove lagoon - they are governed by (RYA)