Hello. Have you ever been out on the water in a kayak?
I believe so. Are they different from canoes?
Yes the difference is the paddle, kayaks have a double-bladed paddle. Both are a lot of fun. 
Is it dangerous?
I think some of the newer kayaks are dangerous because you sit on top of the kayak instead of inside it. 
Where are good places to kayak?
I like to go sea kayaking. It is also nice in lakes and the ocean if you are brave enough. 
Do I need any special training?
I recommend Scuba diving training just in case something goes wrong