He heavily researched New Caledonia's history and published Les Nuits du Bagne calédonien in 1975.
He was elected as a municipal councillor in Nouméa within the same list as outgoing mayor Roger Laroque.
He served as Minister of Health, Public Works, Transportation, Urban Planning and Housing, and the Postal Service at different times.
The elections of 1984 were boycotted by the Kanak and Socialist National Liberation Front, a separatist party, led to a huge majority for the RPCR in the Territorial Assembly.
Dick Ukeiwé became President of the territory, and appointed Maresca as Minister of Health and Social Affairs.