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

Dubrovnik looks best from the water. This four-to-five-hour speedboat trip combines swimming through Koločep’s Blue Cave with a generous hour and a half at sandy Šunj Beach on Lopud. I like the small-group feel, the included drinks, and the way the day mixes active stops with proper time to relax. The ride past Dubrovnik’s walls is another strong point, giving you a fresh view of the Old Town.

The main catch is that the caves can get crowded, especially in summer, and the first swim may be choppy or awkward to enter. You need basic swimming skills, and anyone prone to seasickness should think twice before booking. Still, at about $71 per person, it offers a lot for a half-day on the Adriatic.

Key points at a glance

• Swim into a glowing cave: The Blue Cave is reached through a narrow sea entrance, with turquoise light inside.
• Three caves, three levels of adventure: The Three Green Caves offer easy snorkeling as well as a narrow swim-through passage.
• Šunj is the relaxing finale: You get about 90 minutes on Lopud’s sandy beach, with shallow water and beach bars in season.
• Drinks are included: Local beer, white wine, iced tea, cola, Fanta, and water are available during the outing.
• The speedboat ride is part of the fun: Expect quick transfers, sea spray, music, and wide views of Dubrovnik’s coast.
• Conditions can change the plan: The captain may reverse the cave order or adjust the stops if weather or sea conditions require it.

Why this half-day boat trip works so well

Dubrovnik is famous for its stone walls and red roofs, but the coast looks different once you leave the harbor. From the sea, the Old Town rises above the water in a compact wall of medieval fortifications. The opening boat ride gives you time to take in that view before the focus shifts to swimming and snorkeling.

The tour is shared rather than private, but it is designed as a small-group outing. That matters on a speedboat. You are not waiting for a large busload of people to climb aboard, and the day keeps moving between stops. The exact boat and crew can vary, but guides named Ivan, Rino, Mario, Dora, and others have been praised for keeping the mood friendly and relaxed.

Music is part of the character of the trip. Several guides play music on the ride, and the return journey can become lively as the boat bounces across the waves. That will appeal to you if you want an upbeat outing rather than a quiet nature cruise. If you prefer calm sightseeing, sit back and enjoy the scenery, but do not expect a silent boat.

The refreshments add real value. After swimming in the caves, a cold drink is welcome, and you do not need to bring a cooler. The selection includes local beer, white wine, iced tea, cola, Fanta, and water. Lunch is not included, so the drinks are useful but do not replace a meal.

The first 25 minutes: Dubrovnik from the Adriatic

The trip departs from a meeting point that depends on the option booked. Pickup points can include Dubrovnik’s Old Town port, Cavtat, Mlini, and Srebreno, while the listed boat route begins around Porat Dubrovnik and finishes near the Old Port. Check your confirmation carefully, since the meeting point can change with the departure option.

Once underway, the speedboat covers the distance to Koločep in roughly 25 minutes. This is not just transport. You get open views of the Dubrovnik shoreline, the islands offshore, and the city walls from a low angle that you cannot get while walking the ramparts.

Keep your phone secure during this part. The boat can move quickly, and the return ride may be lively when the sea is up. A waterproof phone case is especially useful if you hope to photograph the caves, though the cave interiors are dark and wet, so expect imperfect pictures.

Koločep’s Blue Cave: beautiful, but not a passive sightseeing stop

The Blue Cave is reached by swimming through a narrow opening. Once inside, sunlight filtered through the sea creates the blue-green glow that gives the cave its name. The effect is strongest when the water and sun cooperate, so the appearance can change with the weather and the position of the sun.

You normally get about 30 minutes here for swimming, snorkeling, and looking around. Masks and snorkels are included, and noodles or lifejackets may be available for people who need extra support. The crew can help with equipment, but the safety information is important: a lifejacket is not a substitute for swimming ability.

You should be able to enter the water, resurface, float, turn, and swim to safety. The cave entrance is not a dry walkway, and getting in can feel more difficult when waves are moving the boat and swimmers around. One useful tip is to wait for the crew’s instructions before entering rather than rushing in with the crowd.

The Blue Cave is often the visual highlight of the outing. It is also where the tour can feel busiest. Other boats may arrive at the same time, creating a cluster of swimmers near the entrance. Go in expecting a popular natural attraction, not a private cave visit.

Some trips include the chance to jump from nearby rocks, but that depends on conditions and the crew. Never treat cliff jumping as an automatic part of the program. The guide may adjust the activity if the sea is rough.

Ten minutes later: the Three Green Caves

A short speedboat ride of about ten minutes brings you to the Three Green Caves, also on Koločep. You get another 30-minute stop here, with options that suit different comfort levels.

Two caves are wider and easier for snorkeling. The third has a narrow passage that lets you swim through the island and come out on the other side. That passage is the most unusual part of the stop, but it is also the one that requires the most confidence in the water.

I like this pairing of cave stops because they are not identical. The Blue Cave provides the striking light effect, while the Green Caves give you more choice in how active you want to be. You can stay near the boat, snorkel in an open cave, or attempt the swim-through if you are comfortable.

The water around Koločep is clear, which makes even a short snorkeling stop worthwhile. Do not expect a formal guided snorkeling lesson or a long underwater excursion. This is a free-swimming stop, with the crew supplying basic equipment and keeping an eye on the group.

Sea conditions can change the order. The captain may visit the Green Caves first and the Blue Cave second, particularly if the sun position or weather makes that the better choice. That flexibility is sensible, even if it means your schedule may not match the printed order.

Ninety minutes at Šunj Beach on Lopud

After the caves, the boat heads about 15 minutes to Šunj Beach on Lopud. This is the longest stop, with around an hour and a half to swim, sunbathe, eat, or simply dry off after the cave swims.

Šunj is known for its fine white sand and shallow turquoise water. The shallows continue for nearly 100 meters from shore, so the beach feels different from the rocky coastline around the caves. The boat anchors as close as possible to the beach to make getting ashore easier, though you may still need to step into the water.

This is where the tour shifts from adventure to holiday mode. You can spread out on the sand, swim without a mask, or visit one of the beachfront bars. During the operating season, a drink purchase at the beach bar with blue umbrellas can come with a complimentary sunbed and umbrella. Another account puts the drink cost at about €15, so do not assume the loungers are free without a purchase.

Lunch is not included. The beach stop gives you a chance to buy food if the bars and services are operating, but availability varies by season. In May and through the warmer months, you are more likely to find the beach facilities open. If you have dietary needs or want a proper meal, bringing a small snack is sensible, provided it is allowed by the operator.

Šunj is attractive but not deserted. In high summer, the beach and water can be busy. The good news is that the 90-minute stop gives you enough time to settle in instead of making you rush ashore, take one photo, and return to the boat.

The return ride and Dubrovnik’s Old Port

The ride back takes about 25 minutes, followed by scenic views around the Old Port and the Dubrovnik coast. This is often the most playful part of the outing. Music, drinks, and the speedboat’s movement can make the return feel like a small floating party.

That atmosphere is a plus if you want a social afternoon. It may be less appealing if you are already tired from swimming or sensitive to motion. The sea can be choppy, and one practical piece of advice is to take motion-sickness medication if you already know you need it.

Drop-off locations can include the Old Town area and the same general Dubrovnik pickup points. Confirm the exact arrangement when you book, particularly if you are staying in Cavtat, Mlini, or Srebreno.

What the $71 price really buys you

At $71 per person, the tour is not the cheapest way to reach the islands, but it is a solid value if you want several experiences in one half-day. The price covers the speedboat, the cave stops, snorkeling masks and snorkels, the beach stop, and a range of drinks.

You are also paying for convenience. Organizing separate transport to Koločep, finding the caves, arranging snorkeling equipment, and reaching Lopud would take more time and planning. This tour puts the main sights into a single outing without taking a full day from your Dubrovnik schedule.

The value is strongest for people who will actually swim. If you plan to stay dry on the boat, much of the appeal disappears. A large part of the tour is built around entering the water, snorkeling, and possibly swimming through a cave passage.

The price feels less attractive if you want a private boat, a quiet cruise, or a detailed historical tour. The guide may share information about the area, but the main focus is enjoying the sea rather than receiving a long lecture about Dubrovnik’s past.

Drinks, equipment, toilets, and what to pack

Bring swimwear and a towel. A waterproof phone pouch is worth considering if cave photos matter to you, and sunscreen is sensible for a half-day with little shade on the boat. The operator supplies snorkeling equipment, and noodles or lifejackets may be available.

Toilets are usually available only at Šunj Beach. Sometimes a speedboat with a toilet is used, but you should ask the crew on the day rather than count on it. Plan accordingly before leaving the harbor.

The beach bars and services at Šunj begin operating in May. From November through April, the stop may change to Lopud village or Koločep village, depending on which cafés, restaurants, and shops are open. The sea is also cold during that period, so this is not the same beach day you would get in high summer.

The tour is not suitable for non-swimmers, people with serious back problems, wheelchair users, people prone to seasickness, or anyone over 80. Getting on and off a speedboat can be awkward if you have limited mobility, even when the crew is helpful.

Who will enjoy this tour most

I would recommend this outing to you if you want a lively introduction to Dubrovnik’s nearby islands and enjoy swimming in natural settings. Families with confident swimmers, couples, groups of friends, and solo visitors who like meeting people on a shared boat should find the format easy to enjoy.

It is particularly good for a first visit to Dubrovnik when you want a break from stone streets and fortifications. The day gives you city views, island scenery, caves, a sandy beach, and refreshments without requiring a full-day commitment.

I would hesitate to recommend it if you dislike speedboats, crowded swimming areas, loud music, or unpredictable sea movement. The caves are popular, and the boat does not create a private experience. You also need to accept that weather may change the order or alter the plan.

Should you book the Blue Cave and Šunj Beach tour?

Book it if you want an active, social half-day with several strong stops and you are comfortable in the water. The combination of the Blue Cave, Three Green Caves, and Šunj Beach gives the trip a good rhythm, while the included drinks and snorkeling equipment help justify the price.

Choose another option if your priority is peace, privacy, or a serious historical tour. For everyone else, this is a practical way to see more of the Dubrovnik coast without giving up an entire day. Go early in the season for a calmer feel, bring a towel and waterproof phone case, and remember that the best part of the trip is not simply looking at the caves. It is getting in.

FAQ

How long does the Blue Cave and Šunj Beach tour last?

The tour lasts about four to five hours. The listed route includes roughly 30 minutes at the Blue Cave, 30 minutes at the Three Green Caves, and about 1.5 hours at Šunj Beach, along with the speedboat rides.

Where can the tour depart from?

Departure options can include Dubrovnik Old Town port, Cavtat, Mlini, and Srebreno. The exact meeting point depends on the option booked, so check your booking details before setting out.

Is snorkeling equipment included?

Yes. Masks and snorkels are included, and noodles or lifejackets may also be available for use.

What drinks are included?

The included drinks are local beer, white wine, iced tea, cola, Fanta, and water.

Is lunch included?

No. Lunch is not included. You may be able to buy food at Šunj Beach when its bars and services are operating.

Do I need to know how to swim?

Yes. Basic swimming ability is required. You should be able to enter the water, resurface, float, turn, and swim to safety. Lifejackets are available but do not replace swimming ability.

Can the itinerary change?

Yes. The captain can change the order of the cave stops or adjust the itinerary because of weather and sea conditions. In colder months, the Šunj Beach stop may be changed to Lopud village or Koločep village.

Are toilets available during the tour?

Toilets are usually available at Šunj Beach. A speedboat with a toilet may sometimes be used, but you should ask the crew on the day.