Are there any dangers in Bora Bora?

Are there any potential dangers or safety concerns that visitors should be aware of when traveling to Bora Bora? Are there any natural hazards like hurricanes or tsunamis that are common in the area? Are there any specific safety precautions that should be taken when engaging in water sports or exploring the island's terrain? Is crime a concern in Bora Bora, and are there any specific areas that visitors should avoid? Additionally, are there any health risks or diseases that are prevalent in the region that travelers should be vaccinated against before their trip?