Johnny Cay is not the only star.

This 5-hour boat tour pairs Cayo Rocoso (Rocky Cay) for a couple hours of rocky island fun with Cayo Acuario (Rose Cay) where the water is so shallow you may feel like you are walking on it. You go early at 8:30 am and you are back at the same meeting spot when you are done, in a small group of up to 10.

I love the way the day is built around real time in the water, not just quick photo stops. The shallow Acuario water is great for casual snorkeling and even shore viewing, and the on-the-ground guidance from Cecilia Forbes helps you get oriented fast. It also feels well organized, so you are not wasting your morning guessing what to do next.

One big consideration: Johnny Cay access can change. Authorities sometimes close it, or strong weather can prevent the boat from navigating there, so your day may shift to focus more on the Acuario and other nearby options.

Key highlights you should care about

• Small group size (max 10) keeps the boat ride calmer and the islands less chaotic
• Admission tickets included for both Rocky Cay and the Acuario
• Acuario water is very shallow (around one meter), so it is friendly for lighter snorkeling
• Cecilia Forbes is a standout host with clear instructions and attentive follow-up
• You need water shoes for the Acuario’s rocky ground
• Plan for dock tax of 15,000 COP per person, since food and drinks are also not included

How this 5-hour boat tour really works

This is a classic San Andrés add-on: one morning on the water that turns your beach day into a two-island mini adventure. You start at 8:30 am at Muelle Portofino, Cra. 1 #2304, San Andrés, and the whole experience runs about 5 hours total. In between, you get a boat ride plus an internal tour of the bay, with qualified personnel on board.

The value here is timing. If you only have a short window before lunch plans, you get two different vibes without planning anything yourself. Rocky Cay is more about nature and lounging on a rock key, while the Acuario is the practical, do-it-now stop where you spend the bulk of your time in the water.

Also, this tour tends to book up. The typical booking pace is about 20 days in advance, so if you have specific dates, it helps to reserve early and keep your expectations flexible for weather.

Meeting at Muelle Portofino: do this and you will feel stress-free

The meeting spot is fixed: Muelle Portofino, Cra. 1 #2304. The start time is 8:30 am, so treat this like a “show up ready” morning. Arrive with enough buffer to check in, get your bearings, and be ready when the boat team starts organizing boarding.

A good mental trick for boat tours in San Andrés: assume the day can evolve. Weather can shift fast, and Johnny Cay can get affected by authorities or winds. If you are carrying anything important (sunscreen, water shoes, a towel), keep it easy to grab, because once you are on island time, you will want everything within reach.

If you are prone to getting salty eye trouble on boats, this is also when you should prep for that. A simple hat and sunglasses can make a big difference if the ride gets splashy.

Stop one: Cayo Rocoso (Rocky Cay) for nature-on-rock time

Your first island stop is Cayo Rocoso, also known as Rocky Cay, with about 2 hours on site and admission included. The island is described as a rock key, so think more “nature and relaxation” than “big sightseeing checklist.” You can use this time to reset after the morning start, stretch out, and enjoy the coastline and clear water before the main Acuario stop.

This is also a smart stop if your schedule is sensitive. Two hours is long enough to swim and soak up the views, but it is not so long that you feel trapped if the day changes.

What to keep in mind: Rocky Cay is not marketed as a polished resort-style beach moment. It is a nature spot, so wear what you need for getting comfortable around rocky edges, and expect that the setting can feel more rugged than sandy.

Stop two: Cayo Acuario (Rose Cay) where shallow water changes everything

The main show is Cayo Acuario, sometimes called Rose Cay, with about 3 hours and admission included. Here is the key detail: the water is extremely shallow, close to one meter. That is why people talk about feeling like you can walk on water. It also makes the whole experience easier for beginners because you can get into the water without the stress of deep, open sections.

This stop is ideal for clear-water viewing. One solo snorkeler highlight was seeing fish from the shore, simply because the water clarity makes it possible. Even if you are not focused on snorkeling gear, you can still enjoy the underwater life by staying in the shallow zones.

One practical caution: the Acuario has rocky areas, and you cannot plan to go barefoot. Bring water shoes. The difference is huge because it lets you walk out to the best spots without hurting your feet, and it also helps you move confidently when the shoreline is uneven.

Wildlife comes with the setting, too. A couple of guests noted stingray awareness and warnings about sharks described as not biting. You do not need panic. Just act like you are visiting a natural habitat: watch where you step, do not chase animals, and stay calm if you see something glide by.

Snorkeling and comfort tips that make the day easier

This tour is built around island time, not a classroom-style experience. You will get qualified personnel and explanations, but you are also expected to enjoy each location at your own pace once you are there. That can be relaxing, but it also means you should come prepared.

Snorkeling equipment is not guaranteed to be a perfect fit for everyone. One guest reported problems using snorkeling gear because a mouthpiece part was missing on the boat. If you have your own mask or snorkel, bring it. If you do not, ask on the boat about how the gear is assembled before you get in the water, so you are not stuck improvising.

Also, the boat ride itself can be salty and splashy. More than one guest said the boat can spray water into your face and even cause eye discomfort from salt. My simple advice: wear sunglasses, consider swim goggles if you use them, and keep your eyes protected if the sea gets choppy.

For the Acuario, your comfort depends on your feet. Again, pack water shoes. Add sunscreen because you are out in the sun for hours, and you will likely spend a lot of time wet.

The Johnny Cay wildcard: why your itinerary might shift

Here is the reality check with this tour: Johnny Cay is not always guaranteed. Authorities can close it, and weather can also prevent the boat from navigating there safely. That is why you should think of this as a “Rocky Cay plus Acuario day” with Johnny Cay as a bonus that might or might not happen.

When Johnny Cay is affected, you may still get time at the Acuario. In at least one case, the operator shifted the plan to include the Acuario and also a mangrove area (Manglares) where the guide explained a different side of San Andrés. In other words, they may replace one highlight with another experience that fits the conditions of the day.

If the tour is canceled due to poor weather, the listed policy is straightforward: you will be offered another date or a full refund. That is exactly what you want to hear when you are traveling with limited time.

Price and value: $39.50 plus the dock tax you should budget

The price is $39.50 per person, and that number already includes a few important things: boat transportation, qualified personnel, an internal bay tour, and admission tickets for both island stops. For a half-day that combines two destinations, that is a solid structure.

But there are two costs you must plan for, and they affect the true bottom line. First, dock tax is 15,000 COP per person, and it is not included. Second, food and drink are not included.

If you are trying to judge whether this is “good value,” here is how I would do it: compare what you get to the cost of standalone island access plus a boat ride. You are buying convenience and time, not just scenery. Also, the small group size helps you feel like you are actually part of a trip, not just getting dumped into a crowd.

So yes, it can be good value. Just be ready to budget for dock tax and bring the basics you would otherwise buy on the island (snacks, water, and sun protection).

Who should book this (and who might want a different day)

This is a great fit if you want a relaxed water day with clear views. You get enough time at each stop to feel like you did something, but the schedule is not so packed that you are constantly sprinting.

It is also a nice choice for couples and friends who want memorable color in the water without needing to be experts. The Acuario stop is especially friendly if you like snorkeling at your own pace, or even just watching fish with minimal effort because the water is shallow.

Where it may not fit: if you need a fully guided, always-with-you narration the whole time, this is not framed that way. Once on island, it is more self-paced. Also, if Johnny Cay is your one non-negotiable must-see, accept that the day can change due to authorities or winds.

Finally, if you dislike rocky shorelines, you will need to lean into water shoes. The Acuario’s terrain is not comfortable for bare feet, and you will enjoy the stop more if you come prepared.

Should you book this boat tour to Rocky Cay and the Acuario?

I would book it if you want a simple, half-day water experience with admission included, shallow Acuario time, and a small-group feel. The highlights are practical: clear water, the chance to see underwater life from close by, and an easy morning structure that starts at 8:30 am and ends back at the port.

I would not book it if Johnny Cay is the only reason you are going, because access can change. If you are the type who gets stressed by plan shifts, remember this tour is weather-dependent and can reroute.

If you do book, your success checklist is easy:

• Bring water shoes for the Acuario
• Wear sunscreen, and protect your eyes on the boat
• If you snorkel, bring your own gear if possible, or ask the team to confirm parts fit before you get in
• Budget 15,000 COP dock tax per person and plan for no food or drinks included

FAQ

How long is the boat tour from San Andrés?

The duration is listed as about 5 hours.

What islands are included in the tour?

The tour includes a stop at Cayo Rocoso (Rocky Cay) and a stop at Cayo Acuario (Rose Cay). Johnny Cay may not be possible depending on local access and weather.

What is included in the price?

The price includes boat transportation, qualified personnel, an internal tour of the bay, and admission tickets for both stops.

What is not included in the price?

Food and drink are not included. There is also a dock tax of 15,000 COP per person.

What time does the tour start and where do we meet?

The tour starts at 8:30 am at Muelle Portofino, Cra. 1 #2304, San Andrés. The activity ends back at the meeting point.

What happens if weather is poor?

This experience requires good weather. If it is canceled due to poor weather, you will be offered a different date or a full refund.