Spend a half-day aboard a double-decker catamaran exploring Santorini’s caldera: swim in Hot Springs, snorkel off Red and White beaches, and enjoy a BBQ with an open bar. This semi-private cruise combines geology, island cuisine and easy swimming stops.
More ways to explore the area's outdoor wonders
The catamaran slips out of Ammoudi as the island’s cliffs loom—black basalt cliffs rising like a broken rim around a calm blue bowl. Salt and diesel mingle; wind tugs at the canopy and the crew calls out the first swim stop: the Hot Springs. Guests peel off onto a swim platform and feel the sulfur-warmed water nudge them toward the jagged lava shoreline.
Difficulty
easy
Duration
5 hours
Fitness Level
Suitable for most fitness levels; you should be able to climb a short boarding ladder, swim short distances and move on a rocking deck.
Wildlife
History
Santorini’s dramatic cliffs are the rim of a volcanic caldera formed by a massive Bronze Age eruption (~1600 BCE) that reshaped the island and influenced Aegean civilizations.
Conservation
Operators must follow coastal rules—boats can’t moor directly on beaches—so avoid anchoring on reefs, use reef-safe products, and don’t disturb marine life when snorkeling.
Reserve your spot on the Small Group Santorini Cruise on Catamaran with BBQ & Open Bar today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Carry ID and a waterproof copy
All guests must have a photo of their passport/ID; keep a waterproof photo or phone copy for embarkation and pickup.
Bring reef-safe sunscreen
The ecosystem is sensitive and the crew recommends environmentally friendly sunscreen for swimming and snorkeling.
Choose dark swimwear for Hot Springs
Sulfur can discolor light swimwear; darker suits resist staining and are recommended for the Hot Springs stop.
Layer for wind on the return
Even in summer the caldera crossing can be cool—pack a light windbreaker or dry top for the sail back.
Reef-safe sunscreen
Protects your skin and the marine environment during snorkeling and swims.
summer
Dark swimwear
Less likely to show staining from sulfur near the Hot Springs.
Snorkel mask (optional)
On-board gear is available but bringing a comfortable mask ensures better fit and clearer snorkels.
summer
Light windbreaker
Blocks wind for the open-deck sail back to port when temperatures drop.
spring