Abstract: | In a longitudinal comparative study, some current issues concerning the nature, penetration, and impact of youth tourism on two beaches on two differentially developed islands in southern Thailand are examined. The beaches are “marginal paradises”—touristic paradises marginal to both the life plan of the tourists and the ecology and economy of the native society. Contrary to a widespread idea, vacationing youth tourists seek mainly “recreational” experiences, resembling those sought by most mass tourists, and show marked narcissistic tendencies. They have few relations among themselves or with the natives. Superficial native friendliness covers up a deeper resentment of the foreigners; while nude bathing causes inter-cultural misunderstanding, animosity finds expression in tourist- oriented crime. Though tourism development is of the small scale “craft” type, its benefits for the surrounding native villages are few, especially on the more developed island, where urban businessmen control the beach. The study lends some support to the multi-lineal model of touristic development, with the two beaches mainfesting differential development dynamics |