Turquoise caves beat another beach day. This small-group speedboat out of Dubrovnik pairs Blue Cave snorkeling on Koločep with free time at Šunj Beach on Lopud, where the water stays shallow for a long stretch. You also get the wow-factor view of Dubrovnik’s city walls from the sea, which hits fast before you even swim.

Here’s the main catch: this is active time on open water. If you get seasickness easily or you are not confident entering and resurfacing in the sea, skip it. The upside is that guides often like Ivan keep the pace fun, the drinks coming, and the stops running smoothly.

Key points to know before you go

• Blue Cave is swim-in, not walk-through, with a narrow entrance that you pass through to reach the glow
• Three Green Caves give you options, from easy, wider swims to a narrower “go through and exit” route
• Sunj Beach works because it’s shallow far out, so you can wade and float without fighting deep water
• Drinks and snorkeling gear are included, and the crew keeps refilling throughout the day
• The boat ride is part of the experience, music and wave-hopping energy included on the return trip
• The captain can swap cave order if conditions change, so keep your schedule flexible and your swim shoes ready

From Dubrovnik to the Open Water: City Walls Views and Fast Island Hopping

I love tours that start with the best postcard shot, then quickly turn it into real time on the water. This one does exactly that. You depart from Dubrovnik Old Town port or nearby pickup points like Cavtat, Mlini, or Srebreno, then glide out for panoramic views of the city walls and red rooftops from sea level.

The speedboat segments are short, which keeps the energy high. You get time at each key spot instead of spending most of the day in transit. That matters if you want a half-day plan that still feels like a full outing.

Small-group pacing also helps. Boats can get busy around cave areas, so having a crew that manages entries and regrouping is the difference between chaos and calm. Think of this as a day that mixes thrill with practical stops, not a slow sightseeing cruise.

Blue Cave on Koločep: Snorkeling Through the Narrow Glow

Blue Cave on Koločep is the headline for a reason. The experience is built around swimming through a narrow entrance, then floating where the water and rock reflections create that famous turquoise look. It is not a casual dip from the steps. You plan to be in the water, wearing your mask, and moving with the group.

Your snorkel kit is included, with masks and snorkels. If you want extra help, noodle floaters are also available, which is a nice safety bridge for people who are comfortable floating but want a little extra buoyancy. Lifejackets (PFDs) are provided too, and you should treat them as safety gear, not as a substitute for swimming ability.

This stop is also where conditions can make a difference. One practical tip: if there are waves, your entry may feel bouncier, so wait for the crew’s cue and enter steadily. If you want the more adventurous option, cliff-jumping is sometimes available from the surrounding rocks, but you can always stick to snorkeling and calm swimming.

The magic moment is when you settle in and realize the cave is the show, not just the backdrop. You will come out with that clear, cool-water feeling and a new respect for how small openings can create big effects.

Three Green Caves on Koločep: Easy Snorkels Plus a Swim-Through Challenge

Next comes the Three Green Caves, also on Koločep, and the big advantage here is variety. Two of the caves are wider and easier to swim and snorkel inside. You can take it slow, float, and focus on the water clarity and rock edges.

The third cave is the one people talk about, because it’s narrower. Instead of just staying in one chamber, you swim through a passage to an exit on the other side. That makes it feel more like a route than a room, and it’s a fun change of pace after Blue Cave.

The practical downside is crowding. In peak season, cave areas can be busy with multiple boats and swimmers. That does not mean it’s ruined. It just means you should keep your head up, watch where people are entering and exiting, and be patient if the water around the entrance gets crowded.

If you like options, you will like this stop. You can choose your comfort level, spend more time on the easier caves, or put yourself to the test in the narrow swim-through passage if you are confident.

Either way, you end this section feeling like you did more than stop for photos. You actually swam the scenery.

Šunj Beach on Lopud Island: 1 Kilometer of Shallow-Sand Time

After caves, you get the reward stop: Šunj Beach on Lopud. This is the one-kilometer stretch of fine white sand that people remember after the boat fades into memory. What really makes it work is the water depth. The sea stays shallow nearly 100 meters out, so you can wade, float, and swim without feeling like you are immediately in deep water.

Your boat anchors close to shore for easier disembarkation, and that reduces the hassle of hauling gear around. Your stop time is about 1.5 hours, which is long enough for a real reset, not just a quick dip.

If you want the comfort upgrade, there is a bar area with blue umbrellas. If you order a drink there, you get a complimentary sunbed and umbrella. In practice, this is often tied to buying at least one drink, and one guest noted it can be around €15 for drink access plus the loungers. Either way, it’s a simple exchange: pay for a drink, then relax like you planned a beach day.

One logistics reality: Šunj is where toilets are usually available. Sometimes the speedboat has a toilet, but you should ask the crew on the day to confirm.

Off-season note: Šunj bars and services begin operating in May. From November to April, the stop adjusts to Lopud village or Koločep village based on the day and what cafés or shops are open. So if you are traveling outside summer, expect a different final feel, more village time than beach-chair time.

On-Board Drinks, Snorkel Gear, and the Music Factor

This tour stands out for a simple reason: you do not have to stop to buy basic stuff. Snorkeling equipment is included, plus drinks throughout the trip. That includes local beer, white wine, ice tea, cola, Fanta, and water. The crew keeps it moving, and in many outings the vibe turns into a party on the ride back, with music playing and the boat bouncing over the waves.

That said, this is not a bar crawl. It is still a swim day. Plan to pace yourself, especially if you plan to snorkel at the caves where you need calm attention to your mask, breathing, and where the group is moving.

I also like that people feel taken care of between stops. Several guides are known for being upbeat and keeping everyone comfortable, with names like Ivan, Mario, Rino, and Leo showing up across different departures. You might also hear guides pumping music choices that match the mood, which turns “waiting your turn at the entrance” into something that feels less like a line.

If you like taking underwater photos, bring a plan. One helpful tip from experience is to use a phone case made for underwater use, because the cave colors are the kind of thing you will want to capture without guessing.

Weather, Waves, and Safety Rules You Should Know

The captain has the right to change the itinerary based on weather. For example, the order of cave visits may flip depending on sun position. That is normal for this type of outing and usually for good reason, not a bait-and-switch.

You should also understand what the tour asks of you physically. Basic swimming skills are required, meaning you can enter the water, resurface, float, turn, and swim to safety. If you cannot do that, you will likely feel stressed even with lifejackets and noodle floaters available.

The tour is not suitable for people with back problems, wheelchair users, non-swimmers, people prone to seasickness, or people over 80 years. That sounds strict because water safety is strict.

A small practical point: lifejackets are always available for safety, but they are not a substitute for swimming ability. If you are the type who gets anxious when you are off your feet, this might not be your easiest day.

On the water, conditions can affect how you enter the first cave. If it’s choppy, you will want to wait for the crew’s timing and enter with care. It’s one of those moments where confidence matters more than speed.

Price and Value for a 4-5 Hour Cave-and-Beach Day

At about $71 per person for 4-5 hours, this tour is easiest to justify when you look at what you get bundled in. You are paying for a speedboat ride, multiple swim stops, and the included snorkel gear. Then you add unlimited-feeling access to drinks during the cruise.

The big value is that you would usually pay separately for some version of these items if you DIY it. Snorkeling gear alone can cost money, and boat tours with structured swimming time rarely stay cheap. Here, the price is built for a full experience, not just transport.

The missing piece is lunch. There is no lunch included, so eat before you go and plan something for after. The tour does end with a beach window that gives you time to grab a drink at the bar, and you can use that as your on-the-water meal if you want something simple.

Also, because it is a shared small-group tour, you get a social atmosphere without feeling like you are in a private bubble. If you want quiet and slow, it might feel a little energetic. If you want a fun half-day with real water time, it is a strong deal.

FAQ

How long is the Blue Cave, Sunj Beach speedboat tour?

The duration is typically 4 to 5 hours, depending on the starting time and how the captain adjusts for conditions.

What drinks are included on the boat?

You get local beer, white wine, ice tea, cola, Fanta, and water included.

Is snorkeling equipment provided?

Yes. Snorkeling equipment is included, including masks and snorkels.

Do I need to be able to swim?

Yes. Basic swimming skills are required, including the ability to enter the water, resurface, float, turn, and swim to safety. The tour is not suitable for non-swimmers.

Are toilets available during the tour?

Toilets are usually only available at Šunj Beach on Lopud. Sometimes a speedboat with a toilet is available, so it is best to ask the crew on the day.

What is the cancellation policy?

You can cancel up to 24 hours in advance for a full refund.

Should You Book This Blue Cave Speedboat Tour?

Book it if you want a half-day that mixes snorkeling, beach time, and Dubrovnik views from the sea, all with drinks and gear included. This is a great fit for people who are comfortable swimming and who want more than a photo stop.

Skip it if you get seasick easily, cannot swim confidently, or you need a low-movement day. Also think twice if your back is sensitive, because you will be on a speedboat and in and out of the water multiple times.

If you do book, pack swimwear and a towel, and consider an underwater phone case so you can actually capture the cave colors. Then bring your best calm-entering mindset for the first cave, because the wow factor is worth the effort.