A speedboat day with three island surprises. This is a 10-hour RIB-style trip that strings together Odysseus Cave snorkeling, Mljet National Park with two turquoise lakes, and multiple quick beach and cave stops around the Elafiti islands.

I love the way the day is paced: you get real time on Mljet without feeling trapped on a bus all day, plus you get multiple water moments (snorkeling, swimming, and cave viewing) instead of only “look from the boat.” One consideration is the ride itself. You’re on a fast, open boat for hours, and the seating can be a bit straddly and bouncy, so it’s not the best match if you have back or hip issues.

Key Highlights You’ll Feel From the Start

• Small-group feel (max 12 people) with guides who keep things moving without rushing.
• Wind jackets, bottled water, and safety gear included, which matters when the morning sea is cool.
• Odysseus Cave swim stop with snorkeling gear provided for an easy first try.
• Mljet National Park freedom: bikes, kayaks, or walking around both lakes and waterway views.
• Island variety: Lopud palms, Blace/nearby beach time, and cave swimming at Kolocep.

Why This Sea Breeze Tour Works for a Dubrovnik Day

If you only have one day to see more than Dubrovnik’s walls, this tour is built for that. You’re out early, back late, and the itinerary is designed to maximize “Adriatic in motion” without making Mljet feel like a drive-by.

The big win is the blend of active and scenic. You’re not just sightseeing; you’re in the water. Odysseus Cave is a standout, and Mljet’s lakes give you options once you land—bike around, hop on a kayak, or keep it simple and walk.

Value is also part of the story. At $163.33 per person, you’re paying for a whole day of fuel, boat time, and included extras like snorkeling gear and wind jackets. The national park entrance fee is the main extra cost, so you’re not stuck with surprise costs at every stop—just one clear add-on for Mljet.

Price and What You Still Need to Budget

The base price is $163.33 per person for a roughly 10-hour excursion. The Mljet National Park entrance fee is not included and runs €25.00 per person.

If you’re trying to decide if it’s “worth it,” I’d think in terms of what you get for that boat day:

• Boat transfer between several islands that would be harder to chain on your own in one day
• Included snorkeling gear and wind jackets
• Guided time on the islands (especially around the cave and park logistics)
• A small-group setup, max 12, which makes the day feel calmer than the big-departure crowd

Once you add the park fee, it’s still a solid value if you’re the type who wants swimming and hands-on time, not just photos from shore.

Morning Logistics: The 7:30 AM Start That Gets You the Quiet

The meeting point is Lapadska obala 4 in Dubrovnik (Lapad area), and the start time is 7:30 AM. That early departure matters. It’s what helps Lopud feel less crowded and gives you enough daylight to enjoy Mljet without rushing everything.

You’ll be out on the water for a while before the first long stop, and the included wind jackets are there for a reason. Even when the Dubrovnik sun feels warm, the sea breeze can make you chilly once the boat is moving.

Bring the basics for a day on an RIB:

• Sunscreen (seriously, 10 hours adds up)
• A towel
• Water shoes if you want comfortable cave or rocky edges
• A jacket layer you can pack away once it warms up

Lopud: Palms, a Church View, and a Calm First Island Stop

Your first stop is Lopud. This is the “reset” island early in the day—pretty, walkable, and timed so you’re there before peak crowds.

You’ll have about 40 minutes here, with free admission. The appeal is straightforward:

• A chance to wander before the day gets busy
• Famous palms (Lopud is known for having the tallest palms in Europe)
• A viewpoint from the Benedictine church area, which gives you a different angle on the coastline

Lopud also tends to be a good place to figure out your day-to-day comfort. Reviews highlight that there’s often time to grab a drink and use facilities at the island port area, and many people swap into swim-ready clothing here so they’re not doing it awkwardly later.

This is a “small legs, big payoff” stop. It’s short, but it makes the rest of the day feel smoother.

Blace Beach Stop: Quick Look, Local Facts, Then Back to Moving

Next you get a shorter pause near Saplunara Beach / Blace beach. Think about about 5 minutes—not a swim-and-lounge session.

The point here isn’t time. It’s context. You’ll hear some facts about the area and get a quick taste of the kind of coastline you’re sailing through on the way to Mljet.

If you’re the type who hates being rushed, this stop might feel like filler. But it also keeps the day from feeling like one long “on the boat” stretch before the real landing moments.

Odysseus Cave: The Swim-and-Snorkel Moment People Remember

The first true water feature is Odysseus Cave on the southern side of Mljet. You get about 40 minutes free time here, and this is widely treated as the trip highlight.

Here’s what to expect:

• The boat stop is timed so you can jump in and swim into the cave area
• Snorkel gear is provided, which makes it easier to try even if it’s your first time
• You’ll see water colors shift shades as you approach the cave opening

Practical cave advice matters. The cave is rocky, and multiple people recommend water shoes because the surfaces can be sharp. If you plan to bring your phone for photos, a waterproof phone case is a smart idea.

Also, plan on getting wet. Even if you only swim briefly, you’ll still likely need the towel later.

Mljet National Park: Two Lakes, Flat Walkways, and Choose-Your-Own Adventure

This is why the trip is worth it. You spend about 3 hours inside Mljet National Park, with free time to explore. The park covers 45 sq km and centers on Malo Jezero (Little Lake) and Veliko Jezero (Big Lake)—two turquoise lakes in a pine forest setting.

What makes this part feel different from a typical day tour is the flexibility. You can choose how you want to move:

• Biking around the lakes (there’s a flat walkway that works well)
• Kayaking if you want to stay close to the water
• Walking and enjoying the waterway between the two lakes
• Swimming when you find a spot that suits you

The park also has that “pick one mini-mission” feeling. Some people in their free time rent bikes or e-bikes and tour a larger loop than they expected. Others keep it slow and focus on the lake views and short swims.

One clear consideration: 3 hours is enough to enjoy Mljet, but it’s not enough to do everything at once. If you love hiking and long stops, you might leave wishing you had a whole day. That’s not a flaw. It’s a reason to plan a return.

For many couples and families, this is the “wow” moment that makes the whole day click.

Šipan (Šipanska Luka): Beach Time, Optional History, and Real Island Breather

After the park, you move to Šipanska Luka on Šipan in the Elafiti Archipelago. You’ll have about 2 hours here.

This stop is less about one famous underwater moment and more about giving you a proper breather. You can:

• Spend time on the beach with a bar nearby
• Explore historical monuments if that’s your thing
• Eat and reset before the last island segment

It’s a good contrast to Mljet. Mljet is lakes and bikes. Šipan feels more like a slower island pause—enough time to stretch, dry off a bit, and handle snacks or meals.

Kolocep Blue Cave: Swim in Blue Water Under a Dark Ceiling

The final island experience focuses on Kolocep and the Blue Cave. This is where you expect the darker, dramatic cave feel and that “movie-like” blue water effect.

You’ll have the chance to swim in the cave waters, and people also mention nearby options like snorkeling and cliff jumping depending on conditions and your comfort level.

One realistic note: cave stops are weather-dependent. On a day with rougher conditions, it’s possible the exact cave experience may not be identical to the plan. The company is clear that good weather is required, and the day’s rhythm is still built around getting you the best experience possible within the sea state.

If you’re hoping for a calm, gentle swim, still bring swim confidence. Cave water experiences are never like a pool.

The Boat Ride: Fast, Fun, and Not for Every Body Type

Now for the part people don’t always think about until they’re sitting there. The boat is a high-speed RIB style, and the seating can feel unusual. Reviews describe it like straddling in the center, with the center rows feeling like you’re perched for the ride rather than seated normally.

That’s part of what makes it fun. You feel the speed and you see the coast from angles that normal ferries never give you. But it’s also why the ride can be uncomfortable if you have:

• Back issues
• Hip or mobility sensitivity
• A low tolerance for bumps

If you’ve been told to avoid long periods of vibration or awkward seating, this is the one reason you’d rethink the trip and consider a slower ferry-based island plan instead.

Also pack for the practical side: sunscreen and water shoes show up again and again in real-world advice. If you want fewer surprises, bring the towel too.

Who This Tour Fits Best (And Who Should Rethink It)

This experience suits you if you want an action-packed day that still includes real exploration time on Mljet. It’s also a great match if you’re comfortable doing short swims, handling a few rocky areas, and making quick plans at each stop.

You’ll likely enjoy it most if:

• You want snorkeling gear provided
• You like small-group pacing (max 12)
• You’d rather see multiple islands in one day than pick only one island
• You enjoy cave scenery and lake time

You should think twice if:

• You have back issues or can’t manage bouncy boat rides
• You’d rather avoid cave swimming or rocky entry zones

Age is another factor. The tour description says it’s not recommended for people older than 65.

My Book-or-Skip Checklist for the Dubrovnik to Mljet Day

I’d book this tour if you’re chasing the mix of water moments and flexible park time. The Odysseus Cave swim plus Mljet’s two-lake setup is a rare combination for a single-day trip from Dubrovnik. And with guides like Marko, Ante, Toni, Carlo, Suzie, and George leading the day in English, you’re not just riding—you’re getting help and direction.

I’d consider skipping if you need lots of onboard comfort, dislike speedboat motion, or have medical concerns about bumps and vibration. In that case, island hopping by ferry may feel kinder to your body.

Best version of you for this day: curious, water-ready, and happy to swap between biking, walking, and quick swims as the mood hits.

FAQ

What is the duration of the Boat Tour to Mljet National Park & 3 Islands?

The tour runs for about 10 hours.

Where do we meet and where does the tour end?

You meet at Lapadska obala 4, 20000 Dubrovnik, Croatia, and the tour ends back at the same meeting point.

What time does the tour start?

Start time is 7:30 AM.

How much does the tour cost?

The price is $163.33 per person.

Is the Mljet National Park entrance fee included?

No. The national park entrance fee is not included and costs €25.00 per person.

What’s included in the tour?

Included items are fuel surcharge, bottled water, safety equipment (life jackets and insurance), snorkel gear, and wind jackets.

What language is the tour offered in?

The tour is offered in English.

How many people are on the boat?

The maximum group size is 12 people.

What kind of physical fitness is needed?

The tour description says travelers should have moderate physical fitness and it’s not recommended for older than 65.

What happens if the weather is bad?

The experience requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund.

Should you book this tour?

If you want the best shot at Mljet National Park plus multiple island water moments in one day, book it. Just be honest with yourself about boat comfort and cave swims. If you’re ready for that, this is one of the smartest ways to use a Dubrovnik day.