Boat Tour to Johnny Cay & Aquarium in San Andres Island

Two islands, one bright-blue day. This San Andrés boat outing appeals to me because it combines the shallow, fish-filled water of Cayo Acuario with two hours at Rocky Cay, all in a five-hour morning-to-afternoon trip. I also like the small maximum group of 10 and the helpful guide Cecilia Forbes, who has earned warm praise for her care and clear instructions.

The main catch is simple: this is more of a beach-and-boat outing than a fully guided cultural tour. The published title mentions Johnny Cay, but the stated stops are Rocky Cay and Acuario, and weather or local authorities can prevent access to one of them. Confirm the exact stops before paying, and bring water shoes, sunscreen, and your own snorkel gear if you have it.

Key points to know before booking

• Cayo Acuario is the star stop: The water is about one meter deep, making it easy to walk and see fish from shore.
• Rocky Cay gets about two hours: Expect time for swimming, sun, food, and a quiet beach break rather than a guided sightseeing program.
• Cecilia Forbes receives especially strong praise: She is described as attentive, organized, and helpful with weather changes and island advice.
• The boat ride can be wet and basic: Some people found the vessel uncomfortable, with spray reaching faces and bags.
• Budget for extra dock charges: The tour price is $39.50 per person, but a 15,000 COP dock tax is not included.
• Weather can change the plan: Poor conditions may lead to a new date, a substitute stop, or a full refund.

A five-hour taste of San Andrés by boat

This tour begins at 8:30 am at Muelle Portofino, at Cra. 1 #2304 in San Andrés. You return to the same place at the end, which keeps the day simple if your hotel or other plans are nearby.

The listed duration is about five hours. That gives you enough time to enjoy the water without giving away an entire day on the island. I see this as a useful middle-ground choice: longer than a quick boat transfer, but short enough to leave room for lunch, shopping, or another beach afterward.

The group limit is 10 people. That is a good number on paper, especially if you prefer a more manageable outing than a large party boat. Still, the exact vessel may vary, and the boat itself is not the strongest part of the experience. Several accounts describe it as simple or uncomfortable, with sea spray reaching passengers and soaking bags.

Pack lightly. Keep phones, passports, cameras, and spare clothes in a waterproof bag. Even on a short crossing, wind and saltwater can turn an ordinary backpack into a soggy problem.

Rocky Cay: two hours for swimming and slowing down

Rocky Cay, also called Cayo Rocoso, is a small rocky key known for its water and beach setting. The stop lasts about two hours, which is enough for a proper swim and a relaxed break, but not enough for a long, unhurried exploration of every corner.

You should arrive expecting free time rather than a detailed guided walk. The activity includes boat transport, qualified personnel, and an internal tour of the bay, but the guide is not necessarily with you at every moment. That suits people who want to choose their own pace.

I like the balance here. You can swim, sit in the sun, eat, or simply look across the clear water. If you want a packed schedule with constant commentary, this may feel thin. If you want to step away from San Andrés’ streets and spend a couple of hours by the sea, the stop makes good sense.

Conditions matter. A rough tide can make getting in and out of the boat awkward. One account describes people jumping into the water when the sea was choppy. That does not mean every departure will be difficult, but you should wear secure footwear and listen closely to the crew.

The name Rocky Cay is a useful warning. This is not a place for delicate sandals and careless footing. Water shoes can protect your feet and make the move from boat to shallow water more comfortable.

Cayo Acuario: shallow water and easy fish watching

Cayo Acuario, also known as Rose Cay, is the most distinctive part of the day. The water is described as being close to one meter deep, so you may find it possible to walk through the sea while looking at fish and other marine life.

That shallow water is a big reason this stop works for a wide range of abilities. You do not need to be a strong swimmer to enjoy the setting, though conditions can still affect comfort and safety. Clear water lets you see marine life from near shore, and one account described the snorkeling as among the best they had experienced because fish were visible from the beach.

Do not confuse shallow water with soft footing. The Aquarium area can be rocky, and walking barefoot may be painful. Water shoes are one of the most useful things you can pack for this tour.

Snorkeling equipment deserves special attention. The tour price does not list masks, snorkels, or fins as included. One person paid extra for equipment but could not use it because the mouthpiece was missing. The safest plan is to bring your own equipment if you own it, or ask before departure exactly what is supplied, what it costs, and whether every piece is ready to use.

You may also see stingrays and small sharks in the water. An account specifically advises caution around stingrays and sharks described as non-biting. That is not a reason to avoid the stop, but it is a reason to avoid touching marine life and to follow instructions from the crew.

The Aquarium is best understood as a natural swimming and viewing area, not a formal aquarium with exhibits or indoor facilities. Its appeal comes from the shallow sea, open sky, rocks, and fish close to you.

Johnny Cay, Rocky Cay, and the need to confirm your route

The experience is promoted as a boat trip to Johnny Cay and the Aquarium, yet the supplied stop details identify Rocky Cay and Cayo Acuario. That difference matters because these are not interchangeable names.

Some departures have been unable to reach Johnny Cay because authorities closed it. Strong rain, wind, or rough water can also change the plan. In one case, the group visited Acuario and then went to a mangrove area as an alternative. Another attempt to reach Johnny Cay the next day was also stopped by weather.

I would contact the operator shortly before the trip and ask three direct questions:

• Is Johnny Cay open on the planned date?
• Are the confirmed stops Johnny Cay and Acuario, or Rocky Cay and Acuario?
• If one stop closes, what alternative will be offered?

That short check can prevent disappointment. The operator says it may reschedule or offer another option when conditions stop the original route. Safety comes first on a small island, and no beach stop is worth a dangerous crossing.

What the guide adds to a mostly independent outing

Cecilia Forbes is the name most closely linked with the best service feedback. She is described as attentive, organized, and generous with practical advice about the islands. She has also helped explain changes when rain and high winds affected the route.

That personal support can be valuable because the day is not structured like a traditional guided tour. You may receive instructions, transportation, and help at the stops, then have free time to explore on your own. Cecilia’s role appears strongest in coordination and care rather than a nonstop historical lecture.

The language service should also be confirmed if it matters to you. One complaint said the booked English service was not delivered, while the operator replied that Cecilia speaks English. That conflicting experience suggests you should state your preferred language when booking and confirm it before meeting at the pier.

For a first day in San Andrés, a helpful guide can make the morning easier. You get assistance with the meeting point, timing, safety, and route changes. Just do not book this expecting an in-depth tour of island history or marine science.

Boat comfort, boarding, and what to carry

The crossing is part of the experience, but comfort may be modest. The boat has been described as basic, and one account reported heavy spray, sore eyes from saltwater, and a backpack that became soaked. Another described the ride as uncomfortable but short.

You can prepare for this without much trouble:

• Wear a swimsuit or quick-drying clothes.
• Use a waterproof pouch for valuables.
• Bring sunglasses that fit securely.
• Pack a towel and an extra dry shirt.
• Use reef-safe sunscreen and reapply it.
• Wear water shoes for rocky areas.
• Bring a personal snorkel set if possible.
• Carry drinking water, since food and drinks are not included.

The tour starts in the morning, but much of the day takes place in direct sun and reflective water. Sunscreen is not a minor extra here. You may spend several hours on beaches or in the sea, and shade may not be available whenever you want it.

Boarding can be more physical when the tide is high or the water is rough. If you have limited mobility, ask the operator about current boarding conditions before booking. The stated information says most people can participate, but it does not promise step-free access or an easy transfer from boat to shore.

Is $39.50 good value?

At $39.50 per person, the price is reasonable if you want organized boat transport to two popular water stops and prefer not to arrange a boat independently. The small maximum group of 10 also improves the value, at least compared with a crowded outing.

The price includes boat transportation, qualified personnel, and an internal tour of the bay. It does not include food, drinks, or the dock tax. The stated dock charge is 15,000 COP per person, and the information also lists a 15,000 COP Rocky Key dock tax. Because those entries may represent one charge or two separate charges, ask for the exact amount before departure.

The value drops if you mainly want a cheap ride between islands. One dissatisfied customer felt a basic boat transfer could be found elsewhere for about $4. That comparison is fair if you do not need coordination, a reserved place, or help with changing conditions.

I would pay the tour price for convenience, a planned route, a small group, and the chance to have someone manage the morning. I would not pay it expecting luxury, premium snorkeling gear, or a highly detailed guided program.

Weather and cancellation rules

This is a weather-dependent activity. If conditions are poor, the operator may offer another date or a full refund. That is important on San Andrés, where rain and wind can affect boat routes quickly.

You can cancel for a full refund if you do so at least 24 hours before the start time. Cancellations or changes made less than 24 hours before departure are not accepted for a refund under the stated rules.

The practical lesson is to avoid placing this outing on your final morning if reaching both islands is especially important. Give yourself another possible day in San Andrés so a weather change does not ruin your only chance.

Who will enjoy this boat trip most?

I would recommend it to couples, friends, and solo visitors who want a half-day near clear water. Families may also like the shallow conditions at Acuario, provided everyone is comfortable with boat boarding, sun, rocks, and changing sea conditions.

It suits you if you enjoy:

• Swimming and relaxed beach time
• Seeing fish in shallow, clear water
• A small organized group
• Free time rather than constant guiding
• A short outing that leaves part of the day open

I would choose another option if you want a luxury boat, guaranteed access to Johnny Cay, a full snorkeling package, or a detailed cultural tour. The operator cannot control official closures or weather, and the boat may be plain.

Should you book the Rocky Cay and Acuario trip?

Book it if your priority is clear water, easy island access, and a relaxed half-day rather than polished transport or nonstop narration. The Aquarium is the strongest reason to go, while Rocky Cay gives you time to swim, eat, and rest.

Before booking, confirm the route name, language, equipment, dock tax, and backup plan for bad weather. Bring water shoes, waterproof storage, sunscreen, and your own snorkel gear if you can. With those preparations, the tour offers solid value and a good first look at San Andrés’ shallow Caribbean waters.

FAQ

Where does the tour start?

The tour starts at Muelle Portofino, Cra. 1 #2304, San Andrés, San Andrés y Providencia, Colombia.

What time does the tour begin?

The scheduled start time is 8:30 am.

Where does the tour end?

The activity ends back at the meeting point at Muelle Portofino.

How long does the boat tour last?

The experience lasts approximately five hours.

Which stops are included?

The stated stops are Cayo Rocoso, also called Rocky Cay, for about two hours, and Cayo Acuario, also called Rose Cay or the Aquarium, for about three hours.

Is Johnny Cay guaranteed?

Johnny Cay is named in the experience title, but the stated stop details identify Rocky Cay and Cayo Acuario. Johnny Cay may close because of official decisions or weather, so confirm the exact route before departure.

What is included in the price?

The price includes boat transportation, qualified personnel, and an internal tour of the bay.

What costs extra?

Food and drinks are not included. A dock tax of 15,000 COP per person is listed, along with a separate Rocky Key dock tax entry at the same amount, so confirm the final charge with the operator.

How many people can join, and what happens in bad weather?

The activity accepts a maximum of 10 travelers. If poor weather cancels the trip, you may be offered a different date or a full refund.