This video was filmed in open water about 60m deep off the west coast of the Big Island of Hawaii. All the footage was captured with a BlueROV2 drone. The beginning shows a Kampachi fish pen followed by deeper dives to the bottom.

The BlueROV2 is a subsea drone for research, exploration, and adventure. With six thrusters, open-source software, quick-swappable batteries, and an HD video option, it is the most capable and affordable ROV on the market.

The BlueROV2: http://bluerov2.com/

See more about Blue Robotics: http://bluerobotics.com