Discover Catalina! Mountain & Sea Adventures (MSA) has been serving families and youth for 20 years providing safe and educational experiences on Catalina Island. Summer camp with MSA is a true adventure as you live aboard our 112’ floating camp, which visits several coves around the island each session! Nine weeks of summer camp serves youth from 8 – 17 with two weekends for family voyages. Spring and fall on land or sea for schools, church or other groups.