Boat Tour to Johnny Cay & Aquarium in San Andres Island

The best part of this San Andrés outing is the water. At Acuario, or Rose Cay, the sea is shallow, clear, and often full of fish close to shore. You can wade between small cays, swim, snorkel, or simply sit in the Caribbean sun. I like the two-hour stop at Rocky Cay and the longer three-hour stay at Acuario because the schedule gives you time to relax instead of rushing from one beach to the next.

I also like the small maximum group of 10, which can make meeting the guide easier, and the personal attention offered by guides such as Cecilia Forbes, who has helped visitors with timing, weather changes, and practical tips. The drawback is that this is mainly transportation and free time, not a fully narrated sightseeing tour. The boat can be basic and wet, and Johnny Cay may be removed from the plan when wind or rain makes the crossing unsafe.

Key points to know before booking

• Acuario is the star stop: Shallow water and clear visibility make it the best place for swimming and snorkeling.
• Rocky Cay includes about two hours: Expect a beach break, not a formal guided visit.
• The boat ride is simple: Some passengers have found it uncomfortable, with spray reaching bags and faces.
• Bring water shoes: Acuario is rocky, and walking barefoot can be painful.
• Snorkeling gear needs checking: Bring your own equipment if possible, since rented gear may not include a usable mouthpiece.
• The COP 15,000 dock tax is extra: Food, drinks, and this port charge are not included in the $39.50 price.

Clear water, short crossings, and two very different stops

San Andrés is surrounded by shallow Caribbean water, and this tour puts you in the middle of it without requiring a full-day commitment. You meet at Muelle Portofino at 8:30 a.m., board a shared boat, and spend roughly five hours moving between Rocky Cay and Acuario.

The route is simple. You get boat transportation, qualified staff, and an internal tour of the bay. Once you reach each cay, though, the experience becomes largely your own. You can swim, snorkel, eat, drink, and rest, but you should not expect a guide beside you explaining every fish or feature.

That distinction matters. If you want a structured nature tour with constant commentary, this may feel thin. If you want an easy way to reach two famous beach stops and then set your own pace, the format works well.

The tour costs $39.50 per person. For that price, I see the value in the boat transfer and access to both cays, especially if you do not want to arrange separate transport. The total cost is higher once you add the COP 15,000 dock tax per person, plus anything you buy to eat or drink. Compare the full amount, not just the advertised fare.

Rocky Cay gives you two hours to slow down

Rocky Cay, also called Cayo Rocoso, is a small rocky key with a beach setting and calm-water appeal. The name is fairly literal: this is a low cay shaped by rock, not a large island with a long list of attractions.

You receive about two hours here. That is enough time for a swim, a walk, photographs, and a relaxed break before the next stop. I would treat Rocky Cay as the gentler opening act. It gives you a chance to get comfortable with the water and the boat group before spending longer at Acuario.

Do not expect a museum, cultural presentation, or lengthy guided walk. The main pleasure is being outdoors. You may find the area busy and heavily used, particularly during popular morning departures, so the appeal comes from the sea and the setting rather than solitude.

One practical issue is the boat landing. When the sea is rough, getting off can be awkward. A passenger described people jumping from the boat into the water during a high tide. Conditions vary, but you should be ready for a wet transfer and wear footwear that handles water well.

Acuario, or Rose Cay, is the main event

Acuario is also known as Rose Cay, and its shallow water is the reason this stop attracts so much attention. In places, the depth is close to one meter, creating the unusual feeling that you are walking across the sea rather than swimming through it.

The tour allows about three hours here, which is the right amount of time for the setting. You can wade, swim, snorkel, watch fish from near shore, and take a break from the water when the sun gets strong. Clear visibility can make even a short swim worthwhile, and fish may be visible from the edge without a long swim.

Acuario is not a polished resort beach. The bottom is rocky, and barefoot walking is a poor idea. Water shoes are one of the best things you can pack for this outing. They help with the rough ground and with getting in and out of the boat.

You should also take care around marine life. One account specifically warns about stingrays and small non-biting sharks. That does not mean you should avoid the water, but it does mean you should watch where you step, avoid sudden contact, and follow instructions from the staff.

The cay can feel crowded and overused at times. That is part of the trade-off for reaching an easy, famous shallow-water site. You get memorable color and easy access, but not a private island experience.

Snorkeling is excellent, but equipment is the weak link

The clear water is the strongest reason to add snorkeling to the day. Visibility can be good enough to see fish from shore, so you do not need to be an expert swimmer to enjoy the marine life.

The equipment situation deserves attention. Snorkel gear may be available for an extra charge, but one passenger paid for equipment and could not use it because the mouthpiece was missing. I would bring your own mask and snorkel if you have them. That simple step can turn a frustrating rental into a much better water stop.

The same advice applies to a dry bag or waterproof pouch. A passenger reported that a backpack became soaked on the boat, while another described salt spray hitting the face and eyes. Keep phones, passports, wallets, and spare clothing protected. A zippered plastic bag is better than trusting an ordinary daypack.

You also need sunscreen, and plenty of it. The schedule puts you on open beaches and in shallow water for several hours, with little reason to stay in the shade. Reapply after swimming and cover up when you can.

The boat is practical, not luxurious

The boat gets you where you need to go, but comfort varies with the vessel, the sea, and where you sit. Several accounts describe the boat as simple or uncomfortable. One person found the ride wet enough to soak a backpack and irritate the eyes with salt water.

That does not make the transfer unusually long. The island stops are relatively close, and the discomfort may be brief. Still, you should board expecting a working excursion boat, not a roomy cruise vessel.

Pack light. Keep your bag secured and protected from spray. If you have sensitive eyes, sunglasses can help, though you should make sure they are secure. People prone to motion sickness should take their usual precautions, since sea conditions can change quickly.

The group cap of 10 is a positive feature. A small party is easier to organize, and it gives you a better chance to speak with the guide when plans change. It does not guarantee a private boat, however, so confirm what your booking includes if that distinction matters to you.

Weather can change the entire plan

This experience requires good weather. Wind and rain can stop the boat from reaching Johnny Cay, and sometimes a full cancellation is necessary. Safety should come first, but you need to understand that the advertised route is not guaranteed in rough conditions.

A useful example is the possibility of visiting Acuario while skipping Johnny Cay. Another option may be a bay activity such as the mangrove area, depending on the conditions and the operator’s arrangements. The route may also be attempted again on another day, but that depends on weather and availability.

This is not a flaw unique to one company. Boat trips around San Andrés depend on sea conditions, and the operator cannot control the wind. Still, the experience becomes poor value if you booked mainly for Johnny Cay and only one stop operates. Ask about the weather forecast before leaving your hotel and keep your schedule flexible.

If bad weather cancels the tour, you can be offered another date or a full refund. You should also understand the standard cancellation rule: cancel at least 24 hours before the start time for a full refund. Cancellations or changes made later are not accepted for a refund.

What the guide adds to a mostly independent day

The guide’s role is mainly coordination, safety, and practical help rather than continuous storytelling. Cecilia Forbes is specifically associated with clear instructions, good organization, and attention to changing weather. She has also been described as able to guide in English, which is useful if you do not speak Spanish.

That personal help can matter. You need to know where to meet, when to return to the boat, how weather affects the route, and how to handle the beach stops. A good guide can make a basic boat outing feel orderly.

Do not book this expecting a private naturalist lesson. The description promises an internal bay tour, but the main day is still transportation plus free time. If you like exploring at your own pace, that is an advantage. If you want a detailed explanation of San Andrés wildlife and geology, you may want a different type of excursion.

Communication before departure deserves care. The meeting point is Muelle Portofino, Cra. 1 #2304, San Andrés, and the tour ends there after the outing. Confirmation is sent at booking, but you should still check your ticket for the exact meeting instructions and make sure you have the operator’s current contact details.

Who will get the most from this San Andrés excursion

I would recommend this boat trip to you if your priority is warm, clear water and a simple half-day away from the main island. It suits couples, friends, solo visitors, and families who are comfortable with swimming, wading, and a basic boat ride.

It is particularly good for:

• A first visit to San Andrés when you want to see the two best-known cays
• People who want several hours in the water rather than a long narrated tour
• Snorkelers who bring their own gear
• Families and small groups that value a maximum of 10 people
• Visitors with a flexible schedule in case weather changes the route

I would hesitate if you need a dry, comfortable boat, guaranteed access to Johnny Cay, or a fully guided program. I would also think twice if you dislike rocky sea bottoms, getting wet during transfers, or busy beach areas.

Small details that make the day better

Arrive ready for water, not for a city tour. Wear a swimsuit under your clothes, pack water shoes, and protect your bag before you board. Bring sunscreen, drinking water, and food if you do not want to buy refreshments at the cays, since meals and drinks are not included.

Budget for the dock charge of COP 15,000 per person. The information also lists a COP 15,000 Rocky Key dock charge, so confirm whether this is a separate fee or the same port charge before departure. That question can prevent confusion at the pier.

Keep your expectations realistic. The memorable part is the sea itself: shallow water, clear views, fish, and the striking sensation of wading between small islands. The less memorable parts are the basic boat, possible delays, and the lack of a constant guided program.

Should you book the Johnny Cay and Acuario boat tour?

Book it if you want an affordable, short boat outing built around swimming and beautiful water. The two stops offer enough time to relax, and Acuario can provide some of the clearest, easiest snorkeling on a San Andrés visit.

Skip it if comfort and certainty matter more than price. The boat may be wet, snorkeling equipment may be unreliable, and poor weather can remove Johnny Cay from the route. The best way to make this booking work is to bring your own gear, protect your belongings, allow for weather changes, and see the tour as a flexible beach day rather than a fully guided sightseeing experience.

FAQ

Where does the tour start?

The tour starts at Muelle Portofino, located at Cra. 1 #2304 in San Andrés, Colombia.

What time does the boat tour begin?

The scheduled start time is 8:30 a.m.

How long does the experience last?

The tour lasts approximately five hours. The planned schedule includes about two hours at Rocky Cay and three hours at Acuario.

Is food or drink included?

No. Food and drinks are not included in the tour price.

Is there an extra dock charge?

Yes. A dock tax of COP 15,000 per person is not included. The details also list a COP 15,000 Rocky Key dock charge, so confirm the exact fee arrangement when you book.

What happens if bad weather cancels the tour?

Because the experience requires good weather, you may be offered a different date or a full refund if poor conditions cause cancellation.