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Discover Croatia’s underwater secrets with Omi’s semi-submarine tour—see shipwrecks, marine life, and night lights in an intimate, family-friendly adventure.
Exploring Croatia’s Underwater World with the Omi Semi-Submarine Adventure
If you’re seeking a unique way to experience Croatia’s marine scenery without getting your feet wet, the Omi semi-submarine tour offers a charming, accessible option. This 30-minute journey takes you beneath the surface in a glass-enclosed vessel, giving an up-close view of shipwrecks, fish, and night-time sea illumination. It’s a straightforward, family-friendly outing that balances fun and discovery in a compact package.
What we find particularly appealing about this experience is how it combines simplicity with authentic maritime sights. The chance to glimpse a WWII shipwreck from a safe, comfortable vessel suits travelers looking for a relaxed but engaging activity. Plus, the lower price point—just $16 per person—means you can enjoy a memorable undersea glimpse without breaking the bank. That said, it’s worth noting that this tour isn’t an extensive dive into the deep blue; it’s a brief, surface-level adventure, so don’t expect to spend hours exploring.
This tour is an ideal fit for families, curious travelers, or anyone eager for a quick peek into Croatia’s maritime history. If you’re after a truly immersive or long-lasting dive, other options might suit you better. But for a pleasant, light-hearted outing that offers a good value and some great photo opportunities, the Omi semi-submarine hits the spot.


The Omi semi-submarine adventure in Dalmatia provides a window into Croatia’s underwater world without getting your clothes wet. It’s not a full dive, but rather a boat with a glass cabin that floats just above the seabed. This setup offers an up-close view of marine life and shipwrecks while maintaining a relaxed atmosphere.
The tour begins from the new port in Omi, where you’ll board a vessel designed to hold just 12 travelers. This small group size ensures that your experience feels personal, and your guide can give more detailed insights—though the primary focus is on viewing through the glass rather than narration. The vessel is equipped with powerful underwater lights, which make the viewing especially captivating when the sun goes down.
Looking for more options in Omis? Here are some other experiences worth considering.

Departure and Journey
Your trip kicks off with a 30-minute ride from Omi’s port. During this time, you can settle into your seat, enjoy the gentle sea breeze, and get ready for your underwater adventure. The boat itself is straightforward, comfortable enough, and designed for easy access to the glass cabin.
The Sunken WWII Ship
One of the main highlights is the sunken ship, which lies just below the surface—the deck is often only half a meter underwater, with other parts buried in the sand. This shipwreck is a tangible link to Croatia’s history and offers excellent photo opportunities. Some reviews note that the wreck is visible for a brief period before the boat moves on, so it’s worth paying attention early on.
Marine Life Viewing
While the waters around Omi are not heavily populated with fish, many visitors report seeing fish, octopuses, and jellyfish through the glass, especially with the shipwreck providing a natural habitat. One reviewer mentioned hoping for clearer water and more fish, which may vary with seasons and weather conditions. The underwater lights help illuminate the scene, making night trips particularly dramatic and photogenic.
Nighttime Illumination
The night tour aspect is especially popular for the visual spectacle it offers. As the lights turn on beneath the water, they cast an enchanting glow, attracting marine creatures and creating a surreal, almost cinematic setting. It’s a memorable way to experience the sea after sunset, with some reviews describing it as “really worth experiencing at least once.”

Multiple reviews help paint a balanced picture:
Guide knowledgeability isn’t explicitly praised or criticized, but the small group setting and clear explanations likely make for a personable experience. The overall value for money is generally regarded as good, especially considering the low price point and family-friendly nature.


For just $16, this tour offers a surprisingly rich visual experience. While it’s not a deep-sea dive, the chance to see a WWII shipwreck, marine life, and enjoy a boat ride in a cozy group makes it a solid choice for those wanting a quick, memorable outing. Its affordability makes it particularly appealing for families or travelers on a budget.
However, the experience’s success depends largely on water clarity and marine activity, which can vary. If visibility isn’t perfect, you might find the views somewhat limited, but the underwater lights help compensate at night. The small group size and personalized setting are definite pluses, making for a more intimate adventure.

This semi-submarine excursion is best suited for travelers seeking a light, family-friendly activity that combines history, marine life, and a bit of nighttime magic. It’s ideal if you’re looking for a quick, affordable experience with guaranteed views from the comfort of a glass cabin. It’s also perfect for those who prefer not to dive or snorkel but still want an underwater adventure.
If you’re after an in-depth exploration or longer marine encounter, you might want to look at other options. But if you’re curious, want to capture some great photos, and enjoy simple, affordable fun, this tour offers good value and a charming glimpse beneath the waves.

Does the semi-submarine actually dive underwater?
No, the vessel stays afloat and does not perform dives. It’s a semi-submarine with a glass cabin that floats just above the seabed for viewing.
How long is the tour?
The entire experience lasts approximately 30 minutes, making it easy to fit into a busy day of sightseeing.
Is this experience suitable for children?
Yes, it’s family-friendly and suitable for all ages. Kids especially enjoy the novelty of looking through the glass and spotting marine creatures.
What can I expect to see during the tour?
You might see fish, octopuses, jellyfish, and a sunken shipwreck just below the surface. Night trips provide illumination that enhances the views.
Is it worth booking in advance?
Yes, especially in peak season, since the vessel only takes 12 guests per trip. Advance booking helps secure your spot.
Are food and drinks included?
No, food and drinks are not included. You may want to bring snacks or plan to eat before or after the trip.
Can I cancel if my plans change?
Yes, you can cancel up to 24 hours in advance for a full refund, offering flexibility if your schedule shifts.
In summary, the Omi semi-submarine tour offers a charming, cost-effective way to explore Croatia’s underwater world. It’s particularly suited for families, casual explorers, and anyone curious about shipwrecks and marine life without the commitment of longer or more intense activities. Expect a short, pleasant ride with some memorable sights, particularly when illuminated at night, making it a worthwhile addition to your Dalmatian itinerary.