The Abacos were our favorite place in The Bahamas. My wife and I spent several months there including Marsh Harbor. We are very fond of the Bahamian people. I hope that the US and the world comes to the aid of those poor people.
The natural beauty of The Bahamas is in the water, not the islands. It is normally very clear. In the news films you can see the water is brown, almost black. That will negatively effect the ecology of those inland waters for decades. It is hard to keep in mind that hurricanes and periodic destruction, are part of the natural ecology in those areas.
The Bahamian Banks are stretches of water hundreds of miles across and only 3 m deep. The water is clear as glass, and the bottom is white sand, plus lots of sea life. They are magical. In moonlight, they appear to glow in the dark.
The banks just north of Grand Bahama Island is where Dorian has been stationary for 24 hours. Not only will the wave action be hard to imagine, but the shallow sea bottom and corals will be exposed to the wind part of the time. Think of the horror of a pod of dolphins caught in that.
Comparable in area and depth is Florida Bay (between the Florida Keys and the mainland.) The water there is turbid. But locals tell me it used to be clear like the Bahamas until a hurricane 20-30 years ago (perhaps Andrew?).