Santorini snorkeling is best at Caldera Beach, the Red and White beaches, Ammoudi Bay below Oia and the volcanic islet of Nea Kameni, with clear water, underwater caves, lava walls and plenty of fish. This guide covers the best spots, what you will see, boat trips and tips for snorkeling.
Snorkeling reveals the volcanic underwater world of the wider Santorini travel guide. The water is clear and rocky. The sections below cover snorkeling.
What is snorkeling in Santorini like?
Snorkeling in Santorini means clear, deep volcanic water over rocky, dramatic seabeds rather than sandy shallows, with lava formations, underwater caves, walls and good numbers of fish. The island sits on the rim of the largest underwater caldera in the world, giving unusually striking scenery just below the surface.
Snorkeling here is shaped by the volcano. Rather than gentle sandy shallows, Santorini offers clear, often deep water over rocky, sculptural seabeds of black lava, with submerged caves, cliffs and walls created by the eruptions that formed the caldera. The visibility is excellent, and the rocky bottom attracts plenty of fish, sea urchins and the occasional octopus, with sea turtles spotted at some spots. Because the island sits on the edge of the world’s largest sea-filled caldera, the underwater landscape is genuinely dramatic. A mask and snorkel turn many of the beaches and coves into windows onto this volcanic world, set within the wider Santorini beaches. The best spots are easy to reach.
What are the best snorkeling spots?
The best snorkeling spots are Caldera Beach, the only beach inside the crater reachable on foot, the Red Beach and White Beach near Akrotiri, and Ammoudi Bay below Oia. Each offers clear water, rocky seabeds, caves and abundant fish, with the volcanic scenery making the snorkeling especially memorable.
A handful of spots stand out. Caldera Beach, a black-sand beach and the only one accessible by land inside the volcanic crater, has deep, rich water with lots of fish and occasional sea turtles. The famous Red Beach near Akrotiri, with its rust-red cliffs, has clear water full of fish, sea urchins and octopus among the rocks, while the boat-only White Beach nearby is prized for its pale cliffs and underwater caves. Ammoudi Bay, the little harbour below Oia, is a hidden gem where you can swim out to a small rock islet, exploring caves and schools of fish in turquoise water. Each pairs striking scenery above and below the surface, set out alongside the guides to the Red Beach, White Beach and Ammoudi Bay. Boat trips reach the wilder spots.
Can you snorkel on a boat trip?
You can snorkel on a boat trip, with many caldera and sailing cruises stopping at snorkel spots such as the Red and White beaches, hidden coves and the waters around the Nea Kameni volcano, where a sunken shipwreck attracts fish. Catamaran cruises usually provide masks and snorkels on board.
A boat opens up the best snorkeling. Many of Santorini’s caldera and sailing cruises build in swimming and snorkeling stops at spots hard to reach from land, anchoring off the Red Beach, the White Beach and quiet coves where you can slip into the clear water straight from the boat. The waters around Nea Kameni, the volcanic islet at the centre of the caldera, are a particular draw, with a sunken shipwreck on the seabed that has become a magnet for fish and a favourite of snorkelers and divers alike. Catamaran cruises typically supply masks, snorkels and sometimes fins on board, along with food and drinks, making a half-day trip an easy, comfortable way to snorkel, set out alongside the guides to Santorini boat tours and Santorini sailing tours. A few tips help.
What tips help for snorkeling?
The tips are to bring or rent water shoes for the rocky entries and sea urchins, your own mask for a better fit, and to snorkel in the calm morning before the afternoon wind picks up. The water is deep at many spots, so be a confident swimmer, and snorkel from June to October when the sea is warm.
A little preparation makes snorkeling safe and enjoyable. Water shoes are genuinely useful, as the volcanic beaches and entries are rocky and gravelly and sea urchins lurk among the stones, and bringing your own mask ensures a comfortable, leak-free fit, though gear can be rented or comes with boat trips. The sea is usually calmest in the morning, before the afternoon meltemi wind ruffles the surface, so snorkel early for the clearest water and easiest conditions. Many of the best spots have deep water and the boat-access coves are far from shore, so be a confident swimmer and consider a float. The warm, clear season runs from June to October, set out alongside the guides to Santorini diving and the best time to visit Santorini. The questions below cover the points travellers ask most.
Frequently Asked Questions
Is Santorini good for snorkeling?
Santorini is good for snorkeling, with clear, deep volcanic water over rocky seabeds, underwater caves, lava walls and plenty of fish. Sitting on the rim of the world’s largest sea-filled caldera, the island has dramatic underwater scenery at spots like Caldera Beach, the Red Beach and Ammoudi Bay.
Where are the best snorkeling spots in Santorini?
The best snorkeling spots are Caldera Beach, the only beach inside the crater reachable on foot, the Red Beach and boat-only White Beach near Akrotiri, and Ammoudi Bay below Oia. Boat cruises also snorkel around the Nea Kameni volcano, where a sunken shipwreck attracts fish.
What should you bring for snorkeling in Santorini?
You should bring water shoes for the rocky entries and sea urchins, and ideally your own mask for a better fit, though gear can be rented or comes with boat trips. Snorkel in the calm morning before the afternoon wind, be a confident swimmer, and go from June to October.