1.Fishing Private Cruise boat tour – BBQ, Snorkeling

★★★★★★★★★★5.0 · 354 reviews · 5 hours (approx.) · from $514Our pick

Private Santorini fishing cruise with BBQ and snorkeling near the volcano. No gear needed, pirate crew, caldera views.

“We really enjoyed this Boat Tour! Elias & Mike were funny and made the 5-hour event go by quickly. The plan was good, and we liked fishing and seeing the pretty views. An exceptional way to experience Santorini's beauty while having fun. Highly recommended for an enjoyable and memorable adventure!”

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2.Sea Caves Kayak Trip with Snorkeling and Picnic

★★★★★★★★★★5.0 · 311 reviews · 7 hours · from $159

Kayak Santorini’s south coast with sea caves, snorkeling, cliff jumping, and a beach picnic. Small group, hotel pickup, dry-bag gear.

“This was a super unique experience, I would recommend this to anyone who enjoys kayaking. You go up the coast line of Santorini and are able to see angles that you wouldn’t normally get to see. We saw a black, white, and red beach. Taking a kayak into the caves is a one of a kind experience as well. The food prepared was done beautifully and tasted amazing! This is the only snorkeling activity that we were actually able to see fish and sea life. The tour guide does a very good job accommodating everyone in the group, I wouldn’t definitely recommend!”

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3.Adventurous Catamaran Experience with Snorkeling

★★★★★★★★★★5.0 · 180 reviews · 5 hours (approx.) · from $116

Half-day Santorini catamaran with a small group, caldera sailing, hot-spring snorkeling, scenic beach stops, and BBQ lunch with open wine.

“It was a nice trip but the crew was not really entertaining the guests like on other boats. It was quiet and chill”

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4.Small-Group Santorini Sea Caves Kayak Trip with Snorkeling & Picnic

★★★★★★★★★★5.0 · 93 reviews · 7 hours (approx.) · from $163

Santorini sea caves kayak trip for up to eight: snorkeling, cliff jumping, beach picnic, and high-res digital photos with hotel pickup.

“This was such an awesome experience! Our guide, Kalliopi, was so kind and personable, and created a memorable day for our family. She introduced us to her family and also prepared a delicious lunch for us. The kayaking instructions were very clear, making the whole experience a lot of fun. The waters were calm, and we were able to see, from the water, parts of the island that we otherwise wouldn't have seen. I can't say even one negative thing about this tour. I would HIGHLY recommend!!”

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5.Serenity Kayak : Sea Caves Kayak Trip with Snorkeling & Picnic

★★★★★★★★★★5.0 · 40 reviews · 7 hours (approx.) · from $161

Kayak Santorini sea caves with snorkeling, a beach picnic, pickup, and sunset views. Small group up to eight, photos included.

“5 stars because 6 is not possible. What a wonderful moment. It was magic and everything was just perfect. Top organization and guide so nice. Thank you very much”

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6.Adventurous Catamaran Experience with Snorkeling

★★★★★★★★★★4.6 · 17 reviews · 5 hours · from $113Best value

Adventurous Santorini catamaran with snorkeling, Red/White beaches, Black Mountain coves, and volcanic hot springs, with optional sunset.

“Very expensive and an amazing experience. Got to swim at 3 stops and crew made us grilled lunch with fresh salads on ship while swimming. Met some fun people in process”

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7.Private Cruise boat fishing tour – BBQ, Snorkeling

★★★★★★★★★★5.0 · 6 reviews · 5 hours · from $1,001

Private Santorini fishing cruise with snorkeling, pro-guided fishing, BBQ lunch, and a sunset view from the boat.

“These two men were AMAZING throughout our entire trip. From our first steps aboard the ship they made sure we had a great experience. It was a tad cold and windy, they made sure we were comfortable, had fun and stayed as warm as possible. The guides entertained us with stories and the history of the island during our fishing and the BBQ after our catch was wonderful. It was too cold to swim, but they found a great sunny spot for us to hang out and eat/drink. They pulled over and put us in a prime spot to watch the infamous Oia sunset We would suggest this to anyone…”

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8.Private Boat tour with snorkeling & Sea Caves

★★★★★★★★★★5.0 · 3 reviews · 1.5 hours · from $412

Private 1.5-hour Santorini speed-boat with sea caves, snorkeling at Mesa Pigadia, plus Red and White Beach views from Perivolos.

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