Fast-water..or..flat-water…the tough sea eagle explorer kayaks are a great whitewater kayak or all-around family kayak. now with super-rigid drop stitch floor!. A kayak is a small, narrow watercraft which is propelled by means of a double-bladed paddle. the word kayak originates from the greenlandic language, where it is the. 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..