ocr: T'ourism remains a smaller business in the Philippines than in the NICS ofSoutheast Asia. The industry is still largely based - around sex- tourism. However, business may suffer when an Australian law banning its citizens from sex-toursm holidays comes into effect. Many of the islands have tourism potential. Palawan, one ofthe least spoiled,retains most of: its tropical rainforest and coral lagoons. The rice terraces ofnorthern Luzon are another attraction.