In tourist holiday magazines, Pacific islands like Fiji, Tonga and Tahiti look like paradise, with tropical rainforests, white, sandy beaches and turquoise blue sea.
According to the online travel service Trip.com, the travel squads prefer places where tourist resorts are concentrated in the city and urban transportation is convenient.
Critics suggest the lack of increased ecotourism is partly caused by Mexico's failure to support tourism away from its beach resorts like Cancun and Cabo San Lucas.