Get the best mini underwater inspection camera you need ,it could be submerged up to 20 meters.

Small size camera 18mm with 120deg lens.
1080P Full HD video without distortion underwater 20m.
Camera light source: white lighting LED, invisible IR.
7"HD monitor for live video record and display 8 hours.
64GB memory for live video storage.
HDMI video output to support larger monitor.