The island was initially chosen by location scouts for Fox Studios not because of its astounding natural beauty, but because of its potential for a landscaping rethink. The script called for a clearing on the beach large enough to play football, so they bulldozed a whole heap of the native trees and vegetation. They also planted a hundred non-native palm trees just to get the right look, essentially introducing an exotic species to the island that could threaten to take over and effectively change the habitat forever. While the whole thing was an eyesore for the locals, the real damage didn't come until the filmmakers left the island. The usual seasonal storms hit the beach, but this time the sand dunes didn't have the protection of their natural vegetation. They collapsed immediately and washed out to sea, damaging the fragile coral reef on their way out.
Environmentalists were outraged and accused the filmmakers of bribing the Thai government to get around pesky legal issues; for instance, the National Park Act, which was specifically designed to prevent this exact sort of thing. The ugly back story is that Fox donated the equivalent of $100,000 to the Royal Forestry Development in Thailand; the normal fee for filming on the island is less than one percent of that. Magically, they were allowed the freedom to remodel the island as much as they pleased after the money changed hands.
Environmentalists were understandably furious. They sought legal action against Fox Studios, its local coordinator Santa International and Thai government officials. Seven years later, the court penalized the film company for unnecessary ecological destruction and ordered them to repair all environmental damage to Maya Beach, which is a nice sentiment until you consider that that's not just planting a couple trees. They are expected to rebuild the marine life population they wiped out, and these are people who couldn't tell the difference between types of palm trees.
In a fitting twist, the message of the movie is that trying to preserve an untouched paradise is futile.