Here is another kayak that lets you view the world under water. The Driftsun Kayak has a fully transparent body. It features an anodized aluminum frame, adjustable seats, and inflatable chambers. It has seating for 2 children or adults. It measures 338cm long, 81cm wide, and 30.5cm deep, weighing 425lbs.
You can use this in a lake, ocean, or any body of water.