Nice flying,  if the mavic had a microphone all you would hear would be the propellers.

You would only hear a swarm of wasps.....
Nice video though

It would be complicated but in theory you could filter out the motor and prop sounds in real time - but you'd need more than one mic on the drone to capture the full sound scape. Interesting idea though - remembering hearing the sounds coming up from the ground when hot air ballon flying.

nice video

If you want sea sounds check out this site - http://soundbible.com/tags-ocean.html

Hello and good day Jason WAI. Thank you for sharing this wonderful video you have filmed. With regards to the inquiry. If the DJI Mavic would have a microphone. DAFlys is correct on post #2. The only sound that the drone will be able to record is the wind and the propellers of the drone. Thank you.

Very nice video, great location!