Snorkeling in Milos and Poliegos: Catamaran with Kleftiko

White and grey rocks, underwater caves, and a BBQ lunch at Kleftiko

A nine-hour catamaran snorkeling cruise from Milos visits Kleftiko Beach, Poliegos's Blue Lagoon, Gerakas, the old sulfur mines and four other stops, with snorkeling gear, a full BBQ lunch, open bar, and GoPro photos included. The boat holds a maximum of 22 people on a spacious 44-foot catamaran with shaded seating. The crew adjusts the route if weather demands it, and the skipper may shift departure and arrival times by up to two hours to keep the journey safe.

Step-by-step itinerary

Catamaran cruise around Milos and Poliegos

• Depart on luxury catamaran
• Pass by Klima fishing village
• Pass by Seagull islands geological site
• Visit Poliegos Blue Lagoon for swim and breakfast
• Pass by old Sulfur Mines
• Stop at Gerakas beach for swim
• Pass by Tsigrado beach for photos
• Stop at Kleftiko for snorkeling and BBQ lunch
• Pass by biggest cave in Milos
• Stop at Kalogries bay for swim and snacks
• Pass by Cape Vani abandoned mine
• Return to port

The experience

The catamaran leaves with snorkeling gear already on board: masks, fins and lifejackets are provided, along with two stand-up paddleboards and floating devices if you want to try them. The boat is built for comfort: a 44-foot luxury catamaran with plenty of shaded areas and room to move, which matters when nine hours on the water is the day. The crew speaks English and Greek, and they'll give you tips on how to explore each site before you get in.

Kleftiko is the centerpiece. The name means "place of thieves" because pirates used it as a hideout for centuries, and the white and grey rock formations rising from the water are the reason it's famous now. When you snorkel here, you're moving through underwater passages and caves in water so clear it changes how the place feels. The crew shoots photos and video on a GoPro during your time there, some shots underwater, and sends them to you by email afterward. You'll spend just over an hour at Kleftiko, and this is where the BBQ lunch happens: grilled food, Greek wine, beer, ouzo, and vegetarian, vegan and gluten-free options if you've requested them in advance. The open bar runs throughout the day, with fresh Greek tapas, fruits and salads between stops.

The other stops move through Milos's geology and history. Poliegos, the largest uninhabited island in Greece, holds the Blue Lagoon: a bay with fluorescent turquoise water and sand you can only reach by boat. Gerakas is accessible only by sea, ringed by emerald water and huge perlite sandslides. You'll pass the abandoned sulfur mines on the southeast coast, used until 1956 and now only visible from the water. Klima, the island's first capital, appears in the golden light for photographs, and the crew shares the story of how the Venus de Milo statue was found there. The Seagull Islands show a rare geological formation of hexagonal basalt tubes. Tsigrado Beach has ladders and ropes cut into the cliff face: access only by sea or by climbing. A 30-minute stop at Kalogries gives time to swim, snorkel and have snacks and drinks in a bay with crystal-clear turquoise water.

What’s included

• Snorkeling gear, lifejackets and floating devices.
• two stand-up paddleboards.
• a full BBQ lunch with grilled food, Greek wine, beer, ouzo and vegetarian, vegan and gluten-free options.
• fresh Greek tapas, fruits and salads throughout the day.
• open bar with sodas, bottled water and snacks.
• GoPro photos and underwater video sent to you by email.
• Wi-Fi on board.

Before you book

Days and timesNext departure: 1 Jul 2027

Book up to3h before

AgesAdult (3 and older) · Infant (1 to 2 years): free

GroupUp to 22

Live guideEnglish and Greek

Meeting point and pickupNo hotel pickup: you go to the meeting point. Ends back at the starting point.

Cancellation and refundsFree cancellation up to 24 h before the start. After that, no refund.It may be canceled due to bad weather or if the minimum number of travelers isn't reached. If that happens, you're offered another date or a refund.

Prices and times updated 7 days ago

Good to know

Low physical effortStroller-friendlyPets welcomePublic transport nearby

Operated by POLCO SAILING

Is this one for you?Book this if you want a full day visiting Milos's main sites, including the Blue Lagoon, with a set itinerary and timing handled by the crew, rather than choosing your own stops and schedule.

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Top questions

What languages is the tour guided in?

Live guide in English and Greek.

Can children come?

Yes. Ticket types: Infant (1 to 2 years): free.

What happens if it rains?

It may be canceled due to bad weather. If that happens, you're offered another date or a refund. Free cancellation up to 24 h before the start.

What's the water like for snorkeling at Kleftiko?

Kleftiko has exceptional water clarity and underwater caves and passages to explore with your snorkel gear. The crew provides masks and fins, and the depth and conditions are suitable for swimmers of all fitness levels.

Is the catamaran comfortable for nine hours on the water?

The Lagoon 440 is a 44-foot catamaran with lots of shaded seating and sunbathing areas, designed to keep the traveling hours relaxing. The boat holds a maximum of 22 people, so there's space to move and sit without crowding.

What food and drinks are included?

A BBQ lunch with grilled food, Greek wine, beer and ouzo is served at Kleftiko, plus fresh Greek tapas, fruits and salads throughout the day. The open bar includes bottled water, sodas and snacks. Vegetarian, vegan and gluten-free options are available if you request them when you book.

What happens if the weather turns bad?

The skipper may adjust the route and shift departure or arrival times by up to two hours to keep the journey safe. If strong north winds arrive, the boat sails to the southern part of Milos instead. Strong south winds mean the route focuses on the northern side and nearby islands like Kimolos and Poliegos instead.

Do I get photos from the trip?

The crew shoots photos and video on a GoPro during your time at Kleftiko, including some underwater shots. They send the full set to you by email after the cruise.