Hello, What is Kayaking?
It is a vehicle like a canoe for moving across the water.
When did people start Kayaking?
Kayaks were created thousands of years ago by the Eskimos
How many people can enter a canoe for kayaking?
Kayaks are mostly used by one person.  The deck is closed and the person sits down inside
Are there any safety cautions to be taken during kayaking?
up behind animals on the shoreline and successfully catch their prey. 
In the 1740s, Russian explorers led by Vitus Bering came in contact with the Aleutians, who had taken the basic kayak concept and developed multiple designs specifically for hunting, transportation, and environmental conditions. They soon recognized the Aleutians were very skillful at hunting sea otters by kayak. Because otters were a popular commodity in Europe and Asia, they would exploit and even kidnap Aleutians and keep them aboard their ships to work and hunt. 
By the mid-1800s the
Kayaking
Kayaking is the use of a kayak for moving across water. It is distinguished from canoeing by the sitting position of the paddler and the number of blades on the paddle. A kayak is a low-to-the-water, canoe-like boat in which the paddler sits facing forward, legs in front, using a double-bladed paddle to pull front-to-back on one side and then the other in rotation. Most kayaks have closed decks, although sit-on-top and inflatable