Hi Steve, thanks for your concern. I was flying with an instructor who was looking after me (already done my solo, but I am not allowed to fly solo in another country until I receive my Private certificate). You are absolutely right about the dangers of flying above open water, reaction time when flying low is very little and can be a big problem, especially out at sea with nothing around.
We had a flight plan scheduled for our flight across the water between West Palm Beach and the Bahamas at around 8000 feet, and we dropped down to about 800 feet when we got close to the islands. We followed the Berry Islands (where we had lunch on the beach and cleared customs). After that we went to the south and up to Nassau where we spent the night. The size of the aquarium in the Atlantis hotel is quite amazing, felt sad to see that they have 3 Giant Manta rays (biggest is about 15 feet, huge!) swimming in their tanks. They say they have a catch and release program where they change the inhabitants every 6 months or so (wondering how and where they get those Mantas tough).
This morning we flew further down south and followed the cays down to Exuma and went back via Eleuthera, Abaco and Grand Bahama. The islands were absolutely stunning to see from the air. We saw some smaller reef sharks near the shores of the Berry Islands and a plane wreck near Exuma. Unfortunately no big tigers and great hammerheads, hopefully next time. Anyway I can highly suggest anyone to see the Bahamas from the air, it looks absolutely stunning. I look forward to return soon to see some sharks up close 
Cheers
Vincent
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