Gorgona Island is a nature reserve located off Colombia's Pacific coast known for its beautiful scenery and diverse wildlife. It can be reached by boat from Buenaventura or Guapi. Activities on the island include hiking, visiting old prison ruins, swimming, and scuba diving at various sites that are home to over 200 fish species. Travelers should bring necessary supplies like vaccines, sunscreen, clothes, and a first aid kit. The Hotel Rio Guapi is a simple but nice hotel located near the boat departure point in Guapi, with rooms of varying sizes that have TVs and provide laundry and dining services.