Cahuita and Puerto Viejo combine a protected Caribbean coral reef with easy-to-plan forest walks, distinctive Afro-Caribbean food and beach-town stays. SINAC identifies designated snorkeling areas in Cahuita National Park, and Cahuita Experience advertises local guided boat trips with equipment. The sea is not reliably clear every day: wind, swell, rain and visibility can cancel a trip. A Punta Uva scuba operator advertises courses and fun dives, but this is not a large, year-round scuba hub. Dedicated freediving infrastructure has not been verified. Choose a land base in Cahuita, Puerto Viejo or Manzanillo and keep marine days flexible. On dry-land days, walk the protected coast, watch wildlife respectfully and visit a locally operated cultural or rescue-center experience. The strongest general climate windows are February-March and September-October, not a guaranteed calm-water season.