I Due Mari Beach
Two seas, two atmospheres, and a strip of sand that connects them: one of Caprera’s most iconic places, where the landscape changes with every step.
Discover I Due Mari Beach
Spiaggia I Due Mari, also known as Cala Portese (sometimes referred to as Two Seas Beach), is one of the most unique stretches of coastline in Caprera. A narrow strip of pale sand connects two opposite sides of the island, separating two bays with distinct characteristics: on one side a more sheltered and protected inlet, on the other a more open front where the sea shifts in color and depth within just a few meters.
This unusual layout makes the beach extremely versatile. Depending on wind and weather conditions, one side may appear flat and crystal-clear, while the other shows gentle ripples and deeper shades of blue. The predominantly sandy seabeds create colors ranging from very pale green to bright turquoise, ideal for long swims and relaxed snorkeling.
Behind the beach, small dunes and Mediterranean scrub frame the isthmus, offering — especially during quieter hours — a pleasant sense of openness and tranquility. Reaching I Due Mari by dinghy is a real privilege: it is possible to approach the shore via the designated landing corridor or remain offshore, choosing the more sheltered side to enjoy calm and transparent waters.
What to expect in this paradise
A surprising double beach: one side calm and sheltered, the other more open and luminous, with sandy seabeds, intense colors, and the freedom to always choose the best water depending on the wind.
Tour I Due Mari Beach by dinghy
The ideal tour to discover La Maddalena, a splendid archipelago composed of more than 60 islands enveloped by turquoise sea and postcard-perfect natural landscapes, such as those of Cala Coticcio, Cavaliera Beach and Cala Corsara.
Your opinion
ECCELLENTE In base a 101 recensioni Pubblicato su Feline Heine21/06/2026Trustindex verifica che la fonte originale della recensione sia Google. One word, Amazing!!! First of all, we would like to thank Gabriele & Ludovico for the amazing communication and guidance, not only during the booking process but also during the day of rental. They were very transparent about costs, we had a great check in/check out process, and they respond very well and clear during our communication on mail. They were absolutely wonderful. We both have our nautical license so we were able to book the R6 without a skipper. This was no problem at all. We went to multiple (recommended) places in the area of Porto Rotondo and they were beautiful. Water so clear as you see on the pictures and we even saw dolphins, twice!! The service they provide is like no other and included drinks, snacks, towels, water-shoes you name it. It was an experience we will never forget! Will definitely go back here whenever we are in Sardinia.Pubblicato su Sabrina Mechta20/06/2026Trustindex verifica che la fonte originale della recensione sia Google. Super journée, des prestations de qualités avec un bateau propre et neuf, un skipper génial ! Je recommande à 100%!Pubblicato su Alessandra Crucillà14/06/2026Trustindex verifica che la fonte originale della recensione sia Google. Esperienza fantastica! Bellissima giornata in gommone con skipper professionale e super disponibile. Mare stupendo, soste in calette meravigliose e organizzazione impeccabile. Consigliatissimo per chi vuole godersi il mare in totale comfort e relax!Pubblicato su Flavia Tasedan01/06/2026Trustindex verifica che la fonte originale della recensione sia Google. We had the most wonderful experience with Flag Sardinia. Our day onboard was perfect, Simone was a wonderful guide, he took us to the best places and made sure we were always comfortable. We had the R8 and the boat was immaculate, and organizing everything was seamless with the help of Gabriele. Highly recommend!Pubblicato su Giuseppe Mazzola02/04/2026Trustindex verifica che la fonte originale della recensione sia Google. Esperienza straordinaria in un luogo incantevole. Gentilissimi e preparatissimi i ragazzi dello staff che hanno messo a disposizione tutta la loro professionalità e preparazione per rendere la nostra giornata indimenticabile. Imbarcazioni nuovissime, ben rifinite, pulite e super confortevoli. Offrono anche servizio di aperitivo al tramonto, molto suggestivo, con salumi e formaggi locali deliziosi. Asciugamani puliti, soft drink e snack disponibili....NON MANCA NIENTE!Pubblicato su Marco Caltagirone30/03/2026Trustindex verifica che la fonte originale della recensione sia Google. Servizio di alto livello. I gommoni sono bellissimi, ben tenuti e molto performanti. Si percepisce subito l’attenzione ai dettagli.Pubblicato su giuseppe longhitano30/03/2026Trustindex verifica che la fonte originale della recensione sia Google. A luglio abbiamo noleggiato un Renier R7 e siamo rimasti davvero colpiti. Gommone bellissimo, molto stabile e comodissimo anche durante la navigazione più veloce. Organizzazione perfetta e staff molto professionale.Pubblicato su Roberta Lizzio23/03/2026Trustindex verifica che la fonte originale della recensione sia Google. Giornata perfetta! Il gommone era molto comodo e potente, ideale per esplorare la costa e fermarsi nelle calette più belle. L’organizzazione è stata impeccabile.Pubblicato su Filip Majchrowski26/09/2025Trustindex verifica che la fonte originale della recensione sia Google. I strongly recommend this boat rental. They are fully professional like I have never seen before in Croatia or France. The Flag Team is super positive, helpful and they a kind of „no-problem” People😀👍🏽 Alessandro is a great Partner to rent boat from. He is very honest, he gave us a great tips where to go and all of his recommendations were top. The caution/deposit has been returned immediately. We took Reiner R10 and I do recommend this boat as well as Magazzu MXII as we have rented both - one day each. 10/10! On Sardinia they are the best choice! Wishing you all a great day on boat😀 Filip
Fun Facts and Frequently Asked Questions
Where is Spiaggia I Due Mari located?
Spiaggia I Due Mari is located on the island of Caprera, in north-eastern Sardinia, within the La Maddalena Archipelago. It sits on a unique stretch of land where a narrow strip of sand separates two different sides of the sea.
This distinctive geographical feature makes the beach truly unique: on one side, the sea is more open and exposed, while on the other side it is calmer and more sheltered.
The landscape is characterized by light-colored sand, smooth granite rocks and Mediterranean vegetation, all set within a well-preserved natural environment.
How can you reach Spiaggia I Due Mari?
Spiaggia I Due Mari can be reached by land via the island of Caprera, starting from La Maddalena and crossing the bridge that connects the two islands. By following the main road, you can arrive close to the beach and complete the final stretch on foot.
Access is relatively easy and does not require long or demanding walks, making the beach suitable even for visitors who prefer more accessible locations.
Alternatively, it can be reached by sea, which is a particularly interesting option to fully appreciate the unique shape of the beach and combine the visit with nearby coves.
With Flag Sardinia, you can reach the area aboard luxury RIB boats: choose bareboat rental if you have a boat license or opt for a skippered experience for a more relaxed and personalized day.
What is Spiaggia I Due Mari famous for?
Spiaggia I Due Mari is famous for its unique formation: a narrow strip of sand that separates two different sea conditions.
On one side, the water can be more exposed to wind and waves, while on the other side it remains calmer and more sheltered. This allows visitors to choose the most comfortable side depending on the weather and sea conditions, even within the same day.
This feature also makes the beach particularly interesting from a scenic perspective, offering changing views depending on which side you look at.
It is a destination appreciated both by those seeking relaxation and by those interested in experiencing different sea conditions in a single location.
What can you do at Spiaggia I Due Mari?
At Spiaggia I Due Mari, visitors can enjoy different experiences within the same beach.
You can choose the sheltered side for calm swimming and relaxation, or move to the more exposed side to observe a more dynamic and wind-affected sea.
The beach is also suitable for snorkeling in calmer areas, while the sandy sections are ideal for sunbathing and enjoying the surrounding landscape.
Arriving by sea allows you to explore nearby coves as well, creating a more varied and dynamic day itinerary.
When is the best time to visit Spiaggia I Due Mari?
The best time to visit Spiaggia I Due Mari is from May to October. During the summer months, the beach is quite popular thanks to its accessibility and its unique geographical feature.
June and September are especially recommended for those who want to enjoy the beach in a more relaxed atmosphere, avoiding the peak crowds of July and August.
Thanks to its two different sides, the beach remains an interesting destination even on windy days, as there is usually always a more sheltered area available.
Why visit Spiaggia I Due Mari during a boat tour?
Visiting Spiaggia I Due Mari during a boat tour allows you to fully appreciate its unique shape and natural setting.
From the sea, you can clearly see the narrow strip of sand separating the two sides and better understand the geographical peculiarity of the beach.
A boat tour also allows you to choose the best stopping point depending on wind and sea conditions, making the most of the beach’s distinctive layout.
With Flag Sardinia, this stop can be included in a wider itinerary across the La Maddalena Archipelago, combined with destinations such as Cala Coticcio, Cala Napoletana and other iconic beaches of Caprera. You can choose bareboat rental for independent navigation or opt for a skippered experience for a completely stress-free day.
Ready to go?
Jump aboard our boats! If you would like to book your trip to discover the Emerald Coast, simply let us know when and which dinghy you would like to use: we will immediately inform you of availability.


