Paradise Beach (Bubble Beach), Kos: The Long Sandy Shore 33km From Kos Town Where Carbon Dioxide From the Nisyros Volcanic Arc Bubbles Up Through the Seabed 50m Offshore

Greece | Kefalos Bay | Kos, Dodecanese

The bubbling effect is caused by volcanic gases — primarily carbon dioxide — that are pushed up from the seabed. Kos is a volcanic island, and this area is part of a larger geothermal system connected to the nearby active volcanic island of Nisyros. This continuous stream of gas creates a unique and subtle “underwater champagne” or “natural Jacuzzi” effect. While the bubbles themselves are a highlight for swimmers and snorkellers, they do not produce any noticeable odour, unlike some other geothermal sites. The water in this specific area is not hot, but the geological activity does make the seabed slightly warm to the touch in certain spots.

The volcanic context is the specific reason Paradise Beach is on every Kos itinerary rather than just being a good beach. The western part of the island, including the Kefalos peninsula where Paradise Beach is located, is dominated by volcanic formations. While Kos’s last major explosive eruption was approximately 160,000 years ago, it still has several thermal springs and gas vents, of which the bubbles at Paradise Beach are one of the most famous examples.

The bubbles are about 50m off-shore but easily accessible. The honest experience note: the bubbles are not like those you see in Jacuzzi and they are without any odour. However, it’s quite exciting both for adults and children to walk between such sources of water bubbles. The sound of bubbles made such a calming effect on me that I nearly fell asleep and went out of the water in a very relaxed state.

Getting There: 33km From Kos Town, 40–50 Minute Drive on the Southern Coastal Road, Bus From Kos Town, Boat From Kefalos

Paradise is a very popular beach along the south west coast of Kos, 7 kilometres before Kefalos and 33 kilometres from Kos Town.

The most comfortable way is to rent a car or a scooter: the drive along the scenic southern coast takes about 40–50 minutes. You can also reach it via regular bus services running from Kos Town towards Kefalos or Kamari.

Take the boat from Kefalos (€5 return) or catch a bus (regular through the day at €1.30 to Kefalos). The boat from Kefalos is the specific option for visitors staying in the southern end of the island — it leaves Kefalos at 10:30 and the return is 17:30.

The beach is well-signposted — look for signs for “Bubble Beach” or “Paradise Beach” on the southern coastal road. There is ample free parking directly above the sand.

The Beach: Long Sandy Shore, Shallow Warm Water, Sunbeds €20 a Set, Inflatable Water Park, Bars and Restaurants

It is a long stretch of golden sand with crystal clear water situated within a natural bay. The water is warm and stays pretty shallow for a long way out, so very safe for families. There are lots of little fish that make it ideal for snorkelling. Sunbeds and umbrellas are available as well as a variety of watersports. There are a number of bars, restaurants and taverns along the beach.

Too many sun loungers is the only criticism on what is otherwise an excellent beach with shallow shelving seabed and excellent sand. The €20 sunbed set price and the density of commercial infrastructure are the specific honest caveats — this is a popular, well-developed beach with full facilities rather than a hidden gem. The inflatable water park in the sea is the specific family activity that the source article correctly identifies.

There is no entrance fee to access Paradise Beach itself. However, renting sunbeds and umbrellas incurs a cost, typically around €20 for a set.

Nisyros: The Active Volcano Visible From the Beach

Nisyros — the active volcanic island where the Stefanos caldera is still smoking and accessible by day trip — is visible from Paradise Beach across the water. The island is 20 kilometres away. Kos is part of the Hellenic Volcanic Arc, a chain of volcanic centres in the Aegean Sea. Day trips from Kos Town to Nisyros run regularly — the specific active volcano excursion that uses Paradise Beach’s geological context as a starting point.

The Kefalos Bay Beach Chain: 13km of Continuous Beaches East From Kefalos

Paradise Beach is not the only beach in the area. A chain of beaches with very nice sand and crystal blue water stretches 13 kilometres east from Kefalos. Paradise Beach is surrounded by many other beautiful beaches such as Magic Beach, Camel Beach, and Exotic Beach — in reality the whole beach is a continuum of beaches one after the other.

The Kefalos Bay beach sequence is the specific southwest Kos programme — hire a car or scooter for the day, drive the 13-kilometre beach chain, stop at Bubble Beach for the volcanic phenomenon, and explore the quieter coves between.

Paradise Beach (Bubble Beach) on Kos is the long sandy shore 33 kilometres from Kos Town in Kefalos Bay — volcanic CO2 bubbles rising through the seabed 50 metres offshore (no odour, calming effect, connected to the Nisyros volcanic system), shallow warm water, €20 sunbed set, inflatable water park, bars and restaurants along the beach, free parking, bus from Kos Town for €1.30, boat from Kefalos for €5 return, and the 13-kilometre Kefalos Bay beach chain extending east.

Drive west from Kos Town. Swim 50 metres out. Find the bubbles.