I was trying to fly my #drone to reef edge of Green Island on the #GBR to get a view of the #coral patches, but the reef flat is very wide. I had to carefully walk over the reef flat at low tide, towards the edge, to launch the drone close enough to maintain visual line of sight. This meant hand launching and landing the drone while standing in shallow water. A bit nerve wracking given that it was quite windy. I only just made it to the edge before I reached the visible limit.