From Dubrovnik/Cavtat: Blue Cave, Sunj Beach Speed Boat Tour

Croatia looks best from the water. This four to five-hour speedboat outing links Dubrovnik’s sea views with swimming at Koločep’s Blue Cave and Three Green Caves, then gives you time to relax on sandy Šunj Beach. I especially like the mix of active stops and slow beach time, plus the included beer, wine, soft drinks, and water. The main catch is that you need basic swimming ability, and the caves can feel crowded in the busy summer months.

I also like the small-group setup and the lively crew. Guides such as Ivan, Rino, Mario, Dora, Peter, and Leo are repeatedly praised for friendly service, music, safety help, and keeping drinks available. Still, this is a shared speedboat, not a private cruise, so the experience depends partly on sea conditions, boat traffic, and the energy of the group.

Key points at a glance

• Swim into Koločep’s Blue Cave: The only way inside is through a narrow entrance from the sea, with turquoise light glowing around you.
• Choose your challenge at Three Green Caves: Two caves are easier for swimming and snorkeling, while a narrow passage lets confident swimmers pass through the island.
• Relax at Šunj Beach for about 90 minutes: The one-kilometer sandy beach has shallow water and beach bars, with sunbeds and umbrellas available when you buy a drink.
• See Dubrovnik’s walls from the Adriatic: The return route gives you a memorable sea-level view of the Old Town, red roofs, and medieval fortifications.
• Drinks are part of the price: Local beer, white wine, iced tea, cola, Fanta, and water are included, which helps the $71 cost make more sense.
• Plan for a bouncy ride: Speedboats are fun, but anyone prone to seasickness should think carefully and consider taking appropriate medication.

Why this half-day boat trip works so well

This tour is built around variety. You are not spending four hours simply motoring past islands, and you are not spending the whole outing in the water. The day moves through three distinct moods: scenic cruising, active cave swimming, and an easy beach stop.

I see that balance as the main reason the experience earns such strong marks. You get the thrill of a fast boat, several chances to swim, and a proper stretch of free time on land. The included drinks add to the casual holiday feel, especially after snorkeling in the cool Adriatic.

The boats usually carry a small group, with one recent party noting no more than 14 people. Exact capacity can vary by boat, but this is clearly a more personal format than a large excursion vessel. You can expect music on board, regular offers of drinks, and a friendly rather than formal atmosphere.

Guides are a major part of the experience. Ivan receives especially warm praise for his humor, music choices, steady handling, and attention to weaker swimmers. Rino, Mario, Dora, Peter, Tommy, Leo, and others are also singled out for making the trip relaxed and enjoyable. Do not expect a long, formal lecture about Dalmatian history. This is more about good local hosting, useful instructions, and getting you safely from one swim to the next.

Leaving Dubrovnik and meeting the Adriatic

Departures are available from Dubrovnik’s Old Town port and may also be offered from Cavtat, Mlini, or Srebreno, depending on the option you book. The precise meeting point can vary, so check your selected departure carefully rather than assuming every boat leaves from the same pier.

The first boat ride takes about 25 minutes. This is your chance to settle in, find a comfortable place, and look back toward Dubrovnik. From the sea, the Old Town’s fortifications rise above the water in a way you cannot fully appreciate from land. The walls, towers, and orange-red roofs form a compact picture against the rocky coast.

I consider this view one of the tour’s quiet bonuses. The caves get most of the attention, but the city panorama gives the outing a strong Dubrovnik connection. If you are taking photos, have your camera ready early in the trip and again on the return route.

Speedboats are open to the elements. That means sun, spray, wind, and a lively ride over the waves. Hold on during faster sections, especially on the way back. Several people loved the bouncing ride and music, but that same motion can be unpleasant if you are sensitive to seasickness.

Swimming into the Blue Cave on Koločep

After roughly 25 minutes, the boat reaches Koločep Island and the Blue Cave. The cave entrance is narrow, and you swim through it rather than walking or boarding another craft. Once inside, sunlight reflecting through the sea creates the blue-green glow that gives the cave its name.

The stop lasts about 30 minutes. That is enough time for swimming, snorkeling, and taking in the cave, but it is not an unhurried beach session. You will want to listen to the crew’s instructions, move efficiently, and keep track of the boat and other swimmers around you.

Snorkeling masks and snorkels are included. Lifejackets are available, and noodle floaters can be used as a more comfortable aid for people who are not strong swimmers. Still, the operator requires basic swimming skills. You need to be able to enter the water, come back to the surface, float, turn, and swim to safety.

The Blue Cave is often the visual high point of the outing. I would not book this tour if you only want to admire caves from the boat. The key part is getting into the water and swimming through the opening. A waterproof phone case is a smart addition if you want photographs inside, since ordinary phones are not suitable for the swim.

Summer crowds are the main drawback. Other boats can gather near the entrance, and swimmers may be sharing the same water. One practical tip is to stay alert when entering and leaving, since moving boats and people in the water can make the area feel hectic. Strong waves can also make the first step into the sea awkward.

Exploring the Three Green Caves

A short 10-minute speedboat ride brings you to the Three Green Caves, also on Koločep. You have around 30 minutes here for swimming, snorkeling, and sightseeing.

The three openings offer different levels of adventure. Two caves are broad and easier to enter, making them suitable for a relaxed swim and a look beneath the surface. The third has a narrow passage that takes you through the island and out the other side. That route is more exciting, but it is better suited to confident swimmers who are comfortable in confined spaces.

This stop adds variety to the Blue Cave. Instead of repeating the same kind of swim, you can choose between easy exploration and a more daring passage. Some people may prefer the Blue Cave’s glowing light, while others will enjoy the sense of moving through the rock at the Green Caves.

The captain may reverse the order of the caves because of weather or the position of the sun. That is not a flaw. The light matters at the Blue Cave, and a good skipper may choose the order that gives you the best conditions. If the sea is rough, the crew may also adjust the plan and use other suitable spots, including favorite cliff-jumping areas when appropriate.

Cliff-jumping is an optional extra, not the purpose of the tour. You should only attempt it if the guide confirms the spot is suitable and you are genuinely comfortable with the water. Nobody should feel pushed into it.

One and a half hours at Šunj Beach

The final main stop is Šunj Beach on Lopud Island. This is the tour’s change of pace. After cave swimming and a fast ride, you get about 90 minutes to dry off, swim from shore, eat, or simply stretch out on the sand.

Šunj is known for its fine white sand and shallow turquoise water. The sea remains shallow for nearly 100 meters from shore, making this the easiest swimming stop of the day. The boat anchors as close to the beach as conditions allow, so getting ashore is fairly simple, though you still need to step from the boat into the water.

The beach is about one kilometer long, with bars and places to eat. Lunch is not included, so bring money if you want food or a drink from the beach facilities. The tour supplies drinks on the boat, but that does not cover a beach meal.

A useful local arrangement can lower the cost of your beach stop. At the beachfront bar with blue umbrellas, buying a drink may include a complimentary sunbed and umbrella. The exact price and arrangement can change, so ask before ordering. One person found the beach chairs required a €15 drink purchase, which is worth knowing before you assume the loungers are simply free.

Šunj is not a deserted strip of sand, especially in the main season. That said, it offers the most comfortable place to spend time outside the boat, and the shallow water works well for anyone who wants a less demanding swim. If your ideal excursion includes a proper beach break, this stop is a strong reason to choose this tour.

The return cruise and Dubrovnik views

After Šunj, the boat heads back toward your starting point. The ride takes about 25 minutes, with another scenic pass by Dubrovnik’s coast and Old Town.

This is often the most playful part of the day. Music may turn the boat into a small floating party, and the skipper may pick up the pace across the waves. Ivan is especially praised for his playlists, while other guides are also credited with creating a relaxed mood.

The atmosphere is informal and social. You can chat with the group, enjoy another drink, and watch the islands recede. If you prefer a quiet sightseeing cruise, the music and speed may be more than you want. If you like a cheerful boat ride after a swim, it is part of the appeal.

Drop-off points correspond to the departure options, with Dubrovnik’s Old Port among the main locations. Confirm your arrangement with the crew on the day, particularly if you are departing from outside the Old Town.

What the $71 price really covers

At $71 per person, this is not the cheapest way to reach Šunj Beach or Koločep. The value comes from combining several separate outings into one half-day: boat transport, two cave stops, snorkeling equipment, a beach visit, and drinks.

The included refreshments are more useful than they may first sound. After swimming at two cave areas, you will likely appreciate having water and soft drinks ready. Local beer and white wine are also included, along with iced tea, cola, Fanta, and water. Several people particularly liked that the crew continued offering drinks after the swim stops.

You still need to budget for lunch and any drink you buy at Šunj to use a sunbed and umbrella. You should also bring a towel, swimwear, and money for beach services. In that light, I consider the tour good value for people who would otherwise pay separately for transport, snorkeling gear, and a beach excursion.

The price feels less attractive if you dislike swimming, want a private boat, or plan to spend most of your day on land. You are paying for movement and activity, not for a slow luxury cruise.

Timing, weather, and practical limits

The advertised duration is four to five hours. The route includes about 25 minutes to Koločep, 30 minutes at the Blue Cave, 10 minutes to the Green Caves, 30 minutes there, 15 minutes to Šunj, 90 minutes at the beach, and about 25 minutes back. Actual timing can shift with sea conditions, boarding, and boat traffic.

The captain can change the order or location when weather makes the planned route unsuitable. From November through April, Šunj’s beach bars and services are not operating in the same way, and the sea may be too cold for a normal beach stop. In that period, the outing may switch to Lopud village or Koločep village, depending on which cafés, restaurants, and shops are open.

The beach facilities begin operating in May. For the classic version of this outing, late spring through early autumn is the safer choice, but even in summer you should expect busy caves and other boats.

There are usually toilets only at Šunj Beach. Sometimes a speedboat with a toilet is available, but you should ask the crew on the day. This matters on a four to five-hour trip, especially if you are traveling with children.

The tour is not suitable for wheelchair users, people with back problems, non-swimmers, people prone to seasickness, or anyone over 80. Boarding a speedboat can also require balance and flexibility. One person with a disability found the crew helpful, but access can still be difficult, so ask before booking if you have mobility concerns.

The crew speaks English, Croatian, Bosnian, and Serbian. Cancellation is flexible up to 24 hours before departure for a full refund, and you can reserve now and pay later.

Who should book this tour?

I would choose this outing if you want a lively half-day on the water rather than a quiet sightseeing cruise. It suits couples, families with confident swimmers, and friends who like mixing snorkeling with beach time.

You will get the most from it if you:

• Enjoy swimming through natural cave entrances
• Want snorkeling gear provided
• Like music and a social boat atmosphere
• Appreciate included drinks
• Want to see Dubrovnik from offshore
• Prefer a compact half-day outing rather than a full-day island trip

I would think twice if you do not swim, get seasick easily, or need a toilet close at hand. The cave areas can be crowded in July and August, and the speedboat ride can be bouncy. The tour is also shared, so you cannot set the pace or choose every stop yourself.

Should you book the Blue Cave and Šunj Beach tour?

Yes, if you want an active, good-value introduction to Dubrovnik’s nearby islands. The strongest combination is the glowing Blue Cave, the choice of three Green Cave passages, and a generous 90-minute finish at sandy Šunj Beach. Add friendly guides, drinks, snorkeling equipment, and Dubrovnik’s sea-level views, and the $71 price is reasonable for a four to five-hour outing.

Book it with realistic expectations. You are not getting solitude, a private yacht, or a guaranteed route in every kind of weather. You are getting a fast, sociable boat day with plenty of swimming, good scenery, and a beach break that gives the caves some breathing room. For most capable swimmers, that is a very worthwhile way to spend half a day near Dubrovnik.

FAQ

Where does the Blue Cave and Šunj Beach tour depart from?

Departure options include Dubrovnik’s Old Town port, Cavtat, Mlini, and Srebreno, depending on the option booked. Check the exact meeting point for your selected departure.

How long does the tour last?

The tour lasts approximately four to five hours. Starting times vary, so availability should be checked for your chosen date.

Are snorkeling equipment and drinks included?

Yes. Masks and snorkels are included, along with local beer, white wine, iced tea, cola, Fanta, and water.

Do I need to know how to swim?

Yes. Basic swimming skills are required because the Blue Cave and Three Green Caves are visited from the water. Lifejackets and noodle floaters are available, but they do not replace swimming ability.

Is lunch included?

No. Lunch is not included. You can use the free time at Šunj Beach to buy food or drinks from the beach bars and other services when they are operating.

Can the itinerary change because of weather?

Yes. The captain can change the order of the cave visits or adjust the itinerary when weather or sea conditions require it. From November through April, the Šunj stop may be changed to Lopud village or Koločep village.