Here is another robot that you can rely on to capture underwater moments. The Fifish P3 has a 4K camera, powerful engines, and a leakproof structure. It is rated to a depth of 100m. It has a max speed of 1.5m/s. The battery life lasts up to 2 hours.
You will be able to view a live video stream through your smartphone. The controller has an adjustable mount compatible with smartphones and tablets up to 7.9″.