Tyrone wrote:
Anybody ever heard of someone using a device to see underwater while
kayaking? Like a reverse periscope? It could be as simple as a oysterbox /
waterscope (water proof box with a glass bottom).

A local kayak shop sells them made by someone nearby. They are just a short
section of white ABS pipe, thin-wall, about 6" diameter and an acrylic bottom.
That isn't something too difficult to make.

Mike