The video clearly shows you are way too low for flying above salt water.
Salt water mist into the drone. Drone dies.
Water droplets on the bottom sensor and you just may cause the Drone to auto-LAND.
TIP: DJI Drones cams have a zoom feature.
EDIT...
Post the flight data for the incident and two of the best flight data analysts outside of DJI @Meta4 and @slup can give an honest unbiased assessment of what actually happened. They have helped people to get DJI to overturn a pilot error decision...
There's no way I was pushing down on the stick. I was pushing up when I saw it going down. But maybe for some reason, like salt water, the drone was programmed to land. I'm sure DJI will find the reason. But it does look like it descended at a...
I don't think your screen recording has anything to support what you've guessed to be the cause of the incident.
It looks like your drone descended under power (landed).
The recorded flight data is always the place to look to find what actually...