Yes, the harbor area has a large refinery, some freight terminals and other industrial stuff, as well as Coast Guard and Navy bases. However, that is a very small part of the island and the resorts are nowhere near it. Staying in the Piscadero Bay or Westpunt areas you will never see any of it. Staying in town or over by the aquarium you will see it on the way in from the airport, but not from the hotel. The refinery can be smelly, but prevailing winds are such that you will almost never smell it at the resort areas. Also, the refinery was recently sold and will be modernized to make it less smelly.

The rest of the island has varied terrain. There are salt flats, rocky coastlines, sandy coastlines, small mountains, forested areas, desert areas, etc.

As for the shark infestation and caged beaches - You made this same assertion in another thread a couple of years ago and several FT'ers familiar with the island refuted it. Since then I have been to three resorts, several dive shops, and a dozen beaches all over the island and have asked locals about this everywhere I go. I just get a lot of funny looks. No one has ever heard anything about it. So unless there is a vast conspiracy to hide some extraordinary shark danger from the tourists, can we put this one to bed?