Vivitar A35 skeleton designed to attach to the

designed to attach to the outside of a lens

find some film at literally any store for like $5

where the sealed body and self-contained lens system can help withstand some of the bumps and drops that would doom a regular camera

and a Rollei flash

bracket-mounted underwater flash for use with the Nikonos series of cameras

Vivitar A35 skeleton designed to attach to theThe Vivitar A35 is "Splash Proof" but, and you will know this when you hold the camera in your own hands, you should take that with a huge grain of salt. There are gaskets on the battery compartment and the film door, a membrane over the shutter button, and a glass window over the lens, so it's not nothing, but the extent to which those are effective is unclear. Anyway, keep it as dry as you can. Runs on two AA batteries (included.)