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

The best part of this half-day outing is the change of scene: one moment you are looking back at Dubrovnik’s stone walls from a fast boat, and the next you are swimming into a glowing cave. I especially like the mix of Blue Cave snorkeling and a proper sandy-beach stop, plus the fact that drinks are available throughout the trip.

You also get a lively small-group setting, often with a guide such as Ivan, Rino, Mario, or Dora, and enough free time at Šunj to slow down. The main drawback is that the caves can be crowded in summer, and this is not a gentle sightseeing cruise. You need basic swimming skills, and people prone to seasickness may find the speedboat ride rough.

Key points to know before booking

• The Blue Cave is reached by swimming: You enter through a narrow opening, so you need to be comfortable in open water.
• Three Green Caves offer different levels of adventure: Two are broad and easy to explore, while one is a narrow swim-through passage.
• Šunj Beach gives you real shore time: You get about 1.5 hours for swimming, sunbathing, food, or a drink under a beach umbrella.
• Drinks are part of the price: Beer, white wine, iced tea, cola, Fanta, and water are served on board.
• The atmosphere is fun rather than formal: Music, friendly guides, and a bouncing ride home are part of the appeal.
• Summer crowds are the trade-off: Other boats may gather around the caves, especially during July and August.

Why this Dubrovnik boat trip works so well

At about $71 per person, this is a good-value way to combine several classic Dubrovnik-area experiences in four to five hours. You get a speedboat ride, views of the Old Town from the water, two cave stops, snorkeling equipment, drinks, and time at one of the area’s best-known sandy beaches.

I would not choose it if you want a quiet, private outing or a detailed cultural tour. The focus is swimming, music, scenery, and easygoing fun. But if you want to get out on the Adriatic without committing to a full-day island cruise, the format makes sense.

The boats depart from Dubrovnik Old Town port, with options also available from Cavtat, Mlini, and Srebreno. The exact meeting point depends on the option you book, so check it carefully before setting out. The shared groups are small, with one recent party describing a boat of about 14 people, though the exact number can vary.

The guides speak English, Croatian, Bosnian, and Serbian. Their style seems to be friendly and hands-on. Ivan is especially good at keeping the mood relaxed, explaining what you are seeing, checking on drinks, and helping less confident swimmers with lifejackets or floating noodles. Rino, Mario, Dora, Peter, Leo, and others have also led departures.

The first view: Dubrovnik from the Adriatic

The boat leaves the harbor and heads along the coast toward Koločep. Before the caves, you get one of the best views of Dubrovnik: the Old Town’s thick stone walls, orange roofs, and towers rising above the sea.

This angle matters. From land, Dubrovnik’s fortifications can feel crowded by streets and buildings. From the water, the city reads as a compact medieval stronghold pressed against the Adriatic. The view is brief rather than a formal sightseeing stop, but keep your camera ready.

The speedboat covers the first stretch in about 25 minutes. You will feel the motion more than you would on a large tour boat, especially if the sea is lively. The reward is speed. You reach the islands quickly, with more time left for swimming and the beach.

The ride itself is part of the entertainment. Several departures feature music, and the trip back can become a small floating party, with the boat bouncing over the waves. That will appeal to people who like a cheerful group atmosphere. If you prefer a calm ride, sit where the motion feels easiest and consider seasickness medicine if you know you need it.

Swimming into the Blue Cave on Koločep

The first major stop is Koločep’s Blue Cave, reached after roughly 25 minutes on the water. You have about 30 minutes here for swimming and snorkeling.

The entrance is narrow, so you do not simply walk into the cave from the boat. You enter the water and swim through the opening. Inside, sunlight filters through the sea and creates the cave’s blue-green glow. The effect is strongest when the light and sea conditions line up, which is one reason the captain may change the order of the stops.

This is a beautiful place, but it is not a dry sightseeing attraction. You need to be able to enter the water, resurface, float, turn, and swim to safety. Lifejackets are available, and floating noodles can help, but neither replaces the ability to swim.

Wear your swimsuit from the start and bring a towel. A waterproof phone case is useful if you want pictures inside the cave. You should also keep track of the boat and nearby swimmers. In peak season, several boats may arrive at once, making the water around the entrance busy.

Some departures find stronger waves at the Blue Cave entrance. Getting into the water can require a little care, especially if you are not a confident swimmer. Listen to the crew and do not treat the cave as a place for risky stunts. Cliff-jumping may be offered for adventurous people when conditions allow, but it is optional and should never be confused with the main purpose of the stop.

The Three Green Caves and the swim-through passage

After around 10 minutes by speedboat, you reach the Three Green Caves, also on Koločep. The stop lasts about 30 minutes and gives you more time in the water.

The three openings suit different comfort levels. Two caves are wider and easier for relaxed 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.

The water is clear, and the caves give you something different from the Blue Cave. The Blue Cave is mainly about light and atmosphere. The Green Caves are more about moving through rock, choosing your route, and deciding how far you want to go.

You are not forced to take the narrow passage. You can stay near the boat, snorkel in the wider openings, or use a noodle for support. This flexibility is a strong point for mixed groups, such as families with strong swimmers and people who are still getting used to open water.

The main limitation is crowding. During the busy summer months, boats and swimmers can gather around the cave entrances. You may need to wait your turn, keep alert for moving boats, and give other swimmers room. The experience remains worthwhile, but it is not a private encounter with untouched nature.

Šunj Beach gives the trip a proper finish

The final major stop is Šunj Beach on Lopud, about 15 minutes from the caves. You get around 1.5 hours here, which is enough time to make the trip feel like more than a sequence of short swims.

Šunj is known for its long stretch of pale sand and shallow water. The sea stays shallow for almost 100 meters from shore, making it easier to wade and relax than at the rocky cave stops. The crew anchors as close to the beach as conditions allow, then you walk or swim ashore.

This is where you can dry off, lie on the sand, swim without a mask, or find something to eat. Lunch is not included, so plan to pay for food yourself if you want a meal. Beach bars and services generally operate from May onward.

One useful detail is the sunbed arrangement. If you order a drink at the beach bar with the blue umbrellas, you receive a complimentary sunbed and umbrella. It is not entirely free in the usual sense because you need to buy the drink, but it can be a pleasant deal if you planned to stop for refreshments anyway. A cocktail and a shaded lounger make a comfortable end to an active morning.

From November through April, Šunj may not be operating as a beach stop, and the sea can be too cold for the usual swimming program. On those dates, the boat may substitute Lopud village or Koločep village, depending on which cafés, restaurants, and shops are open. If the beach is the main reason you are booking, choose a warmer-season departure.

Drinks, music, and the mood on board

The included drinks add real value here. You can expect local beer, white wine, iced tea, cola, Fanta, and water. After swimming in salt water and climbing back into a moving boat, having a cold drink ready is more useful than it sounds.

The supply is not a full meal, and you should not expect fresh fruit or substantial snacks. One person wanted more drinks and fruit, so bring a little food if you need more than liquid refreshment. At Šunj, you can buy food and drinks independently.

Music is another major part of the experience. Guides such as Ivan and Rino are often praised for creating a relaxed, upbeat mood, and the boat can feel like a small party on the return journey. That is fun for many people, but music volume can vary. If you want quiet contemplation, this is probably not the right boat trip.

The guides also help shape the day. Ivan is known for his easy humor and steady handling of the boat. Mario has been praised for pouring drinks and giving people enough time at each stop. Dora and Rino have also been described as friendly and attentive. The exact guide depends on the departure, so book for the route and style rather than expecting one specific person.

What the $71 price really covers

The price is fair if you plan to swim and make use of the included extras. A comparable outing would need to cover transport to the islands, boat time, snorkeling equipment, drinks, and access to several separate locations. Here, those pieces are bundled into one compact half-day.

The strongest value comes from the variety. You are not spending four hours doing only one activity. You get city views, open-water cruising, two cave areas, and a sandy beach.

The value is weaker if you do not swim, dislike speedboats, or want a quiet boat ride. Since lunch is not included and beach loungers require a drink purchase, budget a little extra for Šunj. You should also remember that the tour is shared, not private, so the pace and music suit the group as a whole.

The activity has a 4.8 rating from 502 reviews, and 87 percent of ratings give the transport a perfect score. That matches the practical strengths of the trip: punctual departures, modern boats on some departures, friendly crews, and a route that packs a lot into one morning or afternoon.

Who should book this speedboat outing?

I would recommend it to confident swimmers, couples, families with older children, and friends who want a social day on the water. It is especially good for first-time visitors who want to see more than Dubrovnik’s Old Town but do not have time for a full-day island excursion.

It is less suitable for non-swimmers, people with back problems, wheelchair users, people prone to seasickness, and anyone over 80. Getting on and off a speedboat can be awkward if you have limited mobility, though crew members may help when possible.

Children and adults should take the swimming rules seriously. A lifejacket is available, but it is not a substitute for swimming ability. If you are unsure, stay with the wider caves, use a noodle, and follow the crew’s instructions.

Weather can change the route. The captain may visit the Green Caves before the Blue Cave if the sun position makes the light better, or adjust the stops in poor conditions. That flexibility is sensible, but it means you should think of the cave order as changeable.

Should you book it?

Book this tour if you want a lively, active half-day with excellent swimming stops, a good sandy beach, and drinks included. The Blue Cave is the visual highlight, while the Three Green Caves add a more playful challenge and Šunj gives you time to relax.

Skip it if you want solitude, a dry boat tour, or a highly structured history lesson. Summer crowds around the caves and the speedboat’s rougher motion are the clear trade-offs.

For most people who can swim and enjoy being out on the water, $71 is a sensible price for the range of experiences packed into four to five hours. Bring swimwear, a towel, sun protection, and a waterproof phone case. Then let the crew handle the route, the drinks, and the ride home.

FAQ

Where does the Blue Cave speedboat tour depart from?

Departures are available from Dubrovnik Old Town port, Cavtat, Mlini, and Srebreno. The exact meeting point depends on the option you book.

How long does the tour last?

The experience lasts about four to five hours, depending on the departure and conditions.

What places does the boat visit?

The route includes a view of Dubrovnik’s Old Town from the sea, the Blue Cave on Koločep, the Three Green Caves on Koločep, and Šunj Beach on Lopud.

How much time do you get at the caves?

You spend about 30 minutes at the Blue Cave and about 30 minutes at the Three Green Caves for swimming, snorkeling, and sightseeing.

How long is the stop at Šunj Beach?

The beach stop lasts about 1.5 hours. You can swim, sunbathe, eat, or relax at the beachfront bars.

Are drinks included?

Yes. Local beer, white wine, iced tea, cola, Fanta, and water are included.

Is snorkeling equipment provided?

Yes. Masks and snorkels are included. Lifejackets and floating noodles are also available for safety and support.

Do I need to know how to swim?

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

Can the route change?

Yes. The captain may change the order of the cave stops or adjust the route because of weather, sea conditions, or the position of the sun. From November through April, Šunj may be replaced by Lopud village or Koločep village because beach services may be closed and the sea may be cold.