Cartagena Rosario Islands & Playa Blanca Tour: Snorkeling Day Trip Review

Of all the Cartagena Colombia excursions available, the Rosario Islands day trip is the one that most visitors say they wish they'd booked for longer. This tour combines the two headline experiences in a single day: snorkeling the protected coral reefs of the Parque Nacional Natural Corales del Rosario, and unwinding on the white sands of Playa Blanca de Barú — one of the finest stretches of Caribbean beach in all of Colombia.

The speedboat departs from the Muelle de la Bodeguita docks just outside the Walled City each morning and crosses roughly 45 kilometres of electric-blue Caribbean Sea to reach the archipelago. En route you'll spot fishing villages, mangrove channels and the occasional pelican skimming the surface — the journey itself sets the mood perfectly before you even hit the water.

Unlike larger catamaran tours that herd a hundred passengers onto a single island, this excursion keeps groups small and gives you real choice: snorkel the coral garden with a guide, or opt for the Oceanarium where you can watch a dolphin and sea-lion show and peer into a shark tank. Either option is equally spectacular; which you choose depends entirely on whether you prefer open-water adventure or a more curated marine experience.

The Rosario Archipelago is a UNESCO-designated biosphere reserve made up of 27 coral islands sitting inside a national marine park. The underwater world here is extraordinary even by Caribbean standards — warm, clear water with visibility often exceeding 20 metres.

• Coral reef gardens with 40+ species of reef fish, including parrotfish, angelfish and damselfish
• Sea turtles regularly spotted resting near the reef wall
• The Oceanarium dolphin and sea-lion performance tank (optional add-on)
• A shark observation tank at the Oceanarium
• Playa Blanca de Barú — a kilometre of powdery white sand backed by coconut palms
• Playa Grande beachfront club with hammocks, sun loungers and shaded palapas
• Local artisans selling handmade jewellery and woven bags along the beach path

The tour price covers more than most day trips in the region, which is why it consistently ranks among the top-rated Cartagena Colombia excursions on GetYourGuide.

• Round-trip speedboat transfer from Muelle de la Bodeguita
• Snorkeling equipment (mask, fins and life vest) or Oceanarium entry
• Sun loungers and hammocks at Playa Grande beach club
• Caribbean lunch (fish fillet or chicken, rice, patacones, salad and soft drink)
• Bilingual English–Spanish guide throughout
• National marine park entry fee

A little preparation goes a long way for a day at sea. Keep these practical points in mind to make the most of your Rosario Islands excursion.

• Bring reef-safe sunscreen — regular sunscreen is banned in the national marine park to protect the coral
• The speedboat ride is bumpy in choppy conditions; if you're prone to seasickness take a tablet the night before
• Bring a dry bag or waterproof phone case — everything gets wet on a speedboat
• Wear a rash guard or UV shirt for the snorkel; the Caribbean sun is intense even on cloudy days
• Cash is useful at Playa Blanca for extra drinks, coconuts and artisan purchases
• Minimum age is 4 years; children under 12 must wear a life vest throughout
• Departure times are fixed — arrive at the dock at least 15 minutes early to avoid missing the boat

What to pack

Pack these before you head to the dock or meeting point:

• Swimsuit and a light towel (beach club has sun loungers but bring your own towel)
• Reef-safe sunscreen — standard sunscreens damage coral
• Water shoes or sandals (some snorkel areas are rocky)
• Colombian pesos or USD cash for the pier tax (~COP 31,500) and optional Oceanarium entry
• Dry bag for your phone and valuables — speedboat rides get splashy
• Light cover-up and hat for the boat ride

A few things the booking page won't tell you:

• The return speedboat ride is rougher than the morning crossing — seas build through the day. December to April is the windiest season; expect to get splashed on the way back.
• Walk to the far end of Playa Blanca (the Playa Tranquila section) to escape the crowds and the vendors that concentrate near the main boat drop-off.
• Reef-safe sunscreen is not optional — the reef is a protected marine park and standard sunscreens with oxybenzone visibly bleach coral. The guides will ask you to use it.
• Bring cash in Colombian pesos for the dock tax (COP 31,500) and the optional Oceanarium entry (COP 40,000) — card machines at the pier are often down.
• The snorkeling choice vs Oceanarium has to be made before departure, not on the water — decide in advance.
• Book weekdays over weekends if you can. Saturday and Sunday bring larger party groups and more vendor pressure on the beach.

This excursion is the single most popular activity in Cartagena because it works for almost everyone — families, couples, solo travellers and groups of friends all rate it highly. The combination of snorkeling, optional Oceanarium and Playa Blanca beach club means different members of a group can customise their own day while staying together.

The tour is particularly well suited to:

• First-time visitors to Cartagena who want to see the coast and sea in a single day
• Families with children (ages 4+) looking for a structured, bilingual experience
• Snorkelers of all levels — beginners and experienced alike
• Couples looking for a relaxed but memorable Caribbean day trip

Not ideal for

This tour is not a good fit for:

• Expectant mothers — the speedboat crossing can be rough in open water
• Anyone prone to seasickness
• Guests with back problems, heart conditions, or epilepsy
• People with limited mobility or wheelchair users
• Infants under 12 months
• Guests over 70 years of age — consult your doctor if in doubt