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Explore Corsica's seabed with a semi-submarine tour from Porto, offering marine views, fauna, flora, and regional history in a 45-minute experience.
If you’re looking for a unique way to discover Corsica’s underwater world, a semi-submarine tour departing from Porto offers an engaging 45-minute experience for around $28.81 per person. This activity focuses on viewing marine fauna, flora, and the distinctive Calanches of Porto Bay, all from the comfort of an air-conditioned semi-submarine vessel that seats up to 12 passengers. Departures are scheduled approximately every hour from 9 a.m. to 7 p.m., making it flexible to fit into most travel plans. The tour is suitable for most travelers, with confirmation received at booking, though weather conditions can influence the chosen circuit between Porto’s Calanche or the Castagna nature reserve.
While some reviews praise the stunning marine scenery and the knowledgeable guides, others mention that the visibility of marine life can vary significantly. Still, the tour provides a great introduction to the region’s natural beauty, especially for families or those who prefer a relaxed, guided exploration over more strenuous activities like snorkeling.


The tour starts at 229 A Marina, 20150 Ota, France, and finishes back at the same meeting point. The small group size—up to 12 people—means a more personalized experience, with the vessel’s air-conditioned interior providing comfort even on warmer days. Most travelers find the hourly departures convenient, allowing flexibility in scheduling the activity during daylight hours.
Booking is straightforward, with confirmation received immediately after reservation. It’s worth noting that this tour is dependent on favorable weather conditions, and cancellations are possible if the sea state is rough. In the event of poor weather, alternative dates or full refunds are offered.
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The main highlight of the tour is the view of marine life beneath Porto Bay, including fishes, corals, and potentially other sea creatures. The commentary from the captain enriches the experience, sharing insights about local ecosystems, the region’s history, and the famous tower of Porto.
Some reviews mention seeing different species of fish and corals, illuminated under sunlight filtering through the water. However, others note that visibility can be inconsistent, and some travelers have been disappointed when marine life is less prominent. The semi-submarine’s glass windows provide a stable view, but what you see depends heavily on sea conditions at the time.

Depending on weather conditions, the tour offers two different circuits. The Calanche of Porto circuit showcases the spectacular red rock formations, known as Calanches, which are a UNESCO-listed site. This circuit offers views of both the seabed and these remarkable cliff formations, making it particularly photogenic.
Alternatively, the Castagna nature reserve circuit explores a more natural and less developed marine environment. Both routes include a mix of marine fauna, flora, and regional scenery, with the commented circuit providing background stories and facts from the guide.

The experience is enhanced by the captain’s commentary, which is described as informative, friendly, and humorous. Guides like Alexandre are praised for their passion about marine life, helping passengers understand what they see through the semi-transparent windows.
While some reviews highlight excellent guides, others mention less engaging or less skilled captains, which can impact the overall enjoyment. The quality of commentary and the captain’s expertise are key factors in making the experience memorable.

This tour is suitable for families with young children, especially since the duration is just 45 minutes, which is ideal for little ones. Some reviews explicitly mention that kids as young as 3 enjoyed the trip, thanks to the easy, guided nature of the activity and the explanatory sheets provided.
The air-conditioned semi-submarine makes it accessible, although travelers should be comfortable with small group settings and slight motion on the water. The maximum group size of 12 allows for a closer interaction with the guide, which benefits children and adults alike.

Several reviews point out that marine visibility can be quite variable. Some visitors are thrilled by dolphins, barracudas, and rays, while others express disappointment when less marine activity is visible. The presence of colorful corals and fish depends significantly on sea conditions during the tour.
While the semi-submarine is designed to provide good views with large glass windows, it does not guarantee marine sightings. For those seeking guaranteed marine encounters, combining this activity with snorkeling or other excursions might be worthwhile.

At $28.81 per person, this tour offers a cost-effective way to explore the marine environment of Porto Bay. The short duration and small group size enhance the perception of value, especially given the guided commentary and comfortable vessel.
Some reviews mention disappointments regarding marine sightings or perceived value, but many still appreciate the relaxing scenic experience and the opportunity to learn more about the region’s natural and cultural highlights.

The tour maintains an average rating of around 4.0/5 based on 17 reviews, with many noting it as an “original experience” suitable for families and those interested in marine environments. Praises for friendly guides and breathtaking landscapes are common, though some mention less satisfactory views or less engaging guides.
The cancellation policy allows full refunds if canceled within 24 hours, providing flexibility and peace of mind for travelers. This tour suits those who value guided marine views in a relaxed setting and are prepared for the possibility of variable marine sightings.
This semi-submarine tour from Porto offers a unique perspective on Corsica’s scenic coastline and marine life, combining nature, history, and comfort. The fascinating Calanches and regional stories shared by the captain add cultural depth, making it more than just a sightseeing trip.
However, travelers should be aware that marine visibility can vary, and the experience depends heavily on sea conditions. It is best suited for those interested in a relaxed, guided exploration that is accessible to children and provides a gentle introduction to the region’s natural beauty.
This activity provides good value for the price, especially for those who enjoy scenic views and marine observation without requiring snorkeling or diving skills. It’s a solid choice, particularly if you want a short, family-friendly outing with the chance to see the famous Porto Calanches from a different angle.
“Excursion originale dans ce semi sous marin permettant d'explorer les fonds marins. Nous avons pu observer différents poissons et coraux avec la l…”
How long does the semi-submarine tour last?
The tour lasts approximately 45 minutes.
What is the price per person?
It costs around $28.81, with most bookings made 27 days in advance.
Where does the tour depart from?
The activity begins at 229 A Marina, 20150 Ota, France.
Are there different routes available?
Yes, there are two circuits: the Calanche of Porto or the Castagna nature reserve, depending on weather.
Is the tour suitable for children?
Yes, the short duration and guided commentary make it suitable for families, even with very young children.
What if the weather is bad?
The tour is weather-dependent. If canceled due to poor conditions, you can choose a different date or receive a full refund.
How many people are in each group?
The maximum group size is 12 travelers, ensuring a more intimate experience.
Will I see marine animals?
Marine sightings vary; some tours see dolphins, fish, and rays, while others might see less marine activity.
Is the semi-submarine accessible for all?
The vessel is air-conditioned and suitable for most, but travelers should be comfortable with small group settings.
Can I cancel the tour?
Yes, full refunds are available if you cancel more than 24 hours in advance.