Cayo Arena Day Trip from Puerto Plata. Visit Cayo Arena (also called Cayo Paraiso), a coral island off the coast of the Dominican Republic, during a full-day trip from Puerto Plata. Journey northward in a comfortable coach to Punta Rusia, in La Isabela Bay, then board a catamaran bound for the tiny coral atoll. On the way, look out for manatees and enjoy the sunshine while your relax on the deck. On the island, relax in the soft sand, snorkel and swim in the azure waters or explore on foot. Lunch, beverages and round-trip transportation from Puerto Plata hotels are included. Book and Save 10%: Cayo Arena Day Trip from Puerto Plata.