Where it is
Isla Catalina lies off La Romana, in the province of the same name. It is not part of Santo Domingo: from the capital you drive about 1 h 45 east on the Autovía del Este, then take a short boat ride. The island is a protected natural area with no permanent residents.
Why go
Catalina is smaller and quieter than Saona, with clearer water close to shore. The reef wall known as "La Pared" drops off steeply and is popular with divers, while shallow coral gardens are ideal for snorkellers.
What a day looks like
Early pickup in Santo Domingo, drive to La Romana, boat or catamaran to the island, a guided snorkel stop, then beach time and lunch on Catalina before returning to the capital in the evening.
Catalina vs. Saona
Saona: bigger, more famous, the starfish natural pool and a longer boat ride. Catalina: calmer, better snorkelling, fewer people. If you love the water more than crowds, choose Catalina. Compare island, beach and mountain excursions.
Combine it
Catalina pairs well with Altos de Chavón in Casa de Campo, also in La Romana — though doing both in one day from Santo Domingo is rushed. Many travellers do them on separate days.
Practical tips
Bring reef-safe sunscreen, a waterproof phone case and cash for tips. Don't touch or stand on coral. Trips can be rescheduled in strong winds.
