REVIEW · HERAKLION
Heraklion: Nature Reserve Full day sailing to Dia Island & Lunch
Book on Viator →Operated by Altersail · Bookable on Viator
Dia Island is a calm escape from Heraklion. From the water you get unblocked views of Crete, plus snorkeling gear and SUP boards are included so you can make the most of every stop. It’s also run as a tight group of up to 10 people, which makes the day feel relaxed rather than crowded.
The only real thing to consider is that this is a smaller sailboat, so storage and toilet space are not “luxury yacht” big. If you’re okay with that, the tradeoff is a more personal, easygoing sailing day.
In This Review
- Key Highlights You’ll Actually Care About
- From Heraklion’s Old Venetian Port to Dia Island
- Dia Island: Uninhabited and Protected for Clear-Water Swims
- Agrilia Bay and Panagia Cove: Crowds Stay Off Your Schedule
- Agios Georgios, Minoan Clues, and Lunch That’s Actually Part of the Day
- What You Get for Snorkeling and SUP (and What You Still Need)
- Crew Energy, Sailing Comfort, and the Little Onboard Details
- Dolphins, Timing, and How Weather Can Change the Plan
- Price in Heraklion: Is $118 Good Value for a Whole Day?
- Should You Book This Dia Island Sailing Day?
- FAQ
- How long is the sailing to Dia Island?
- Where do we meet, and is pickup included?
- What swimming and water activities are included?
- Is lunch included, and do they offer vegetarian food?
- Are drinks included, and is wine available?
- What if the weather is poor?
- How many people are on the boat?
Key Highlights You’ll Actually Care About

- Dia Island (uninhabited and Natura 2000 protected): biodiversity-focused coast with very clear water
- Three swimming stops at different beach types: quiet coves first, then the well-protected Agios Georgios
- Snorkeling equipment + SUP boards included: you don’t have to rent gear on the spot
- Fresh lunch onboard (vegetarian option): local ingredients cooked during the sail
- Small group max 10 people: better feel, easier flow on and off the boat
- A chance to see dolphins on the return: not guaranteed, but the skipper keeps an eye out
From Heraklion’s Old Venetian Port to Dia Island

This trip starts in the Heraklion marina area at Cafe MarinaLeof. Nearchou, Iraklio 712 02. You’ll meet the crew at the Old Venetian port, then step aboard for a safety briefing and boat-handling intro. It’s the kind of start that helps if you’re new to sailing, and it sets expectations for how the day will move.
Sailing out from Heraklion toward Dia Island takes about an hour and a half on the water for many departures, but the exact timing can shift with conditions. Either way, you’re quickly out of the city “noise zone” and back into sea-breeze rhythm, which is the whole point.
One smart part of the setup: there’s free transfer from select points up to 10 km from Heraklion port. If you’re staying near the port area, that saves hassle on a day where you’d rather spend energy on swimming and snorkeling than logistics.
You can also read our reviews of more boat tours in Heraklion
Dia Island: Uninhabited and Protected for Clear-Water Swims

Dia is uninhabited, about 7 nautical miles north of Heraklion, and protected under the Natura 2000 program for its biodiversity. For you, that matters because the day’s plan is built around nature—remote coves, calmer water spots, and viewpoints that you just can’t get from shore.
The water here can be incredibly clear. On snorkel, you’re likely to see colorful fish, and you may spot things like flat flounders, sea urchins, sea worms, and starfish. You’re not touring a coral reef experience in the Disney sense. It’s more about marine life and visibility in this protected coastal environment.
One practical note from real sailing days: some entry areas are rocky. Even if you’re a confident swimmer, protect your feet if you plan to hop into shallows. Water shoes are a very good idea, especially if your feet are sensitive to uneven stone.
Agrilia Bay and Panagia Cove: Crowds Stay Off Your Schedule
The day is paced with multiple swim and snorkel chances, and the first ones are about getting comfortable before the busier stop.
Agrilia Bay is the first stop, chosen specifically so you can avoid crowds. This is where you’ll have your first real window to swim, snorkel, or just float and relax. Plan for about an hour here, along with fresh fruit and a cool refreshment.
Then you continue to Panagia Cove, known for its green, crystal-clear water. This second swim stop tends to feel like the “best temperature” moment of the day for many people, because the boat is already warmed up into its rhythm. Even if you don’t snorkel, it’s a great place to hang out, look down into the water, and enjoy the sea views without feeling rushed.
A nice detail: the tour’s focus on remote coves means you’re not spending your limited vacation hours fighting for space near the waterline.
Agios Georgios, Minoan Clues, and Lunch That’s Actually Part of the Day

The final swim stop is Agios Georgios, which is often described as one of the island’s most crystal-clear beaches, and it’s also a well-protected cove. This is the point where the scenery shifts a bit from “quiet cove hunting” to “popular for a reason.”
There’s also a standout history angle. Agios Georgios is tied to major Minoan ports, and Jacques-Yves Cousteau discovered remnants there in 1976. You don’t need a museum ticket to appreciate that context—you just have the right setting to imagine ships moving through this cove long ago.
And then comes lunch, which is a big part of why this trip feels like a full day and not just a cruise with snacks. After you settle in at Agios Georgios, the skipper and host prepare a delicious lunch made from fresh and local ingredients. There’s a vegetarian option, and the onboard meals are consistently praised for being genuinely good rather than “we handed you something.”
A small but important reality on drinks: the trip includes unlimited drinks (mineral water and soft drinks) and wine with responsible consumption. You should treat wine as part of the meal experience rather than the first thing you order at the first swim stop. If you’re planning around alcohol timing, plan to align it with lunch hours.
What You Get for Snorkeling and SUP (and What You Still Need)

This is one of the most practical parts of the experience: snorkeling equipment and SUP boards are included. That means you can spend the day in the water without paying extra for rentals or figuring out how to assemble gear quickly while waves are involved.
Here’s what included gear does for your day:
- It removes friction. You can say yes to the second swim because you’re already set up.
- It adds variety. Snorkeling is one experience; SUP is another. You can switch depending on comfort and sea state.
- It keeps the schedule simple. The crew has the stops built around when it makes sense to swim.
What’s not included is the “common sense” beach stuff:
- Beach towel
- Swimsuit
- Sunscreen
So bring what you need to stay comfortable.
Also consider bringing water shoes if you’re worried about rocky entry points. Even if you don’t plan to go far into the shallows, a little foot protection makes it easier to enjoy the stop.
Finally, note the physical limit: the tour is not suitable for people over 275 lbs (125 kg). That’s worth checking before you book so you’re not stuck at the dock.
You can also read our reviews of more tours and experiences in Heraklion
Crew Energy, Sailing Comfort, and the Little Onboard Details

The crew is the heart of a day like this. You’ll sail with a professional certified crew and you’ll get life jackets onboard. There’s also first aid certification, which matters because you’re in the open water.
The vibe tends to be welcoming and hands-on. In past days, I’ve seen references to captains and hosts such as Stephanos, Petros, Nikos, and Matthew (along with hosts like Aphrodite and Vag). You might not get the same names, but the pattern is consistent: the crew is attentive, keeps things safe, and shares info about the island as you go.
On a smaller sailboat, onboard comfort is about the basics done well. Here’s what you can expect to be useful:
- Toilet access onboard, with cleaning/disinfection mentioned as happening twice per day at minimum
- A fresh water shower to rinse salt off (helpful when you want to feel human again before leaving)
- Space to store bags, though the boat is still compact, so pack smart
There’s a real balance to keep in mind. One complaint mentioned beverages not being very cold and a toilet not meeting expectations for that person. That doesn’t define the trip, but it is a reminder that you’re on a sailing day in a working vessel, not a five-star resort spa.
If you’re the type who gets picky about tiny comfort details, go in with realistic expectations and you’ll enjoy it more.
Dolphins, Timing, and How Weather Can Change the Plan

This is a sailing experience, so weather matters. The itinerary can vary depending on conditions. That’s normal here, and it’s part of what protects the day’s feel and safety.
On the return to Heraklion, the skipper and host may look for dolphins. It’s not a promise, but if you want a chance at that extra “wow” moment, stay on deck for the approach rather than disappearing below.
One more timing tip: the day is short enough that every stop needs to count. If you want the most from snorkel, bring a steady attitude. You’re not doing a marathon underwater session; you’re collecting a few really good swim windows with time to reset on board.
Price in Heraklion: Is $118 Good Value for a Whole Day?

At $118.27 per person for a day around 7 hours, this can be strong value if you factor in what’s bundled.
You’re paying for:
- A full sailing cruise experience
- A professional crew
- Snorkeling equipment and SUP boards
- Lunch onboard (with a vegetarian option)
- Unlimited drinks including soft drinks and mineral water, plus wine
- Transfer up to 10 km from Heraklion port
If you’ve ever tried to cobble together a “beach day” in Crete, you know how costs stack up fast: food, drinks, boat transport, and rentals. Here, the structure does the budgeting for you. Even if you don’t use SUP, you still get the swim/snorkel gear and meals.
The small-group cap of 10 travelers is another value point. Less crowding usually means an easier time getting in and out of the water and a calmer feel on board.
If you’re a budget traveler, this isn’t a bargain price. But it often feels like the right kind of spend because so much is included and you don’t need extras to have a full day.
Should You Book This Dia Island Sailing Day?
Book it if you want a real sailing day with clear-water swimming, not a rush from one selfie spot to the next. This tour fits best when you like:
- Uncrowded coves and scenic water time
- A small group and a hands-on crew
- Included gear (snorkel + SUP) so you can adapt on the fly
- An onboard lunch that’s part of the experience, not an afterthought
I’d think twice if:
- You expect lots of “resort comfort” on a small boat
- You’re extremely sensitive about toilet cleanliness or beverage temperature
- You need wine served immediately at the first swim stop rather than aligned with lunch timing
If you’re traveling as a couple, with friends, or with teens who enjoy water activities, it’s a solid choice. It’s also a good match if you’re new to sailing and want a friendly crew to guide the day.
FAQ
How long is the sailing to Dia Island?
The tour runs for about 7 hours.
Where do we meet, and is pickup included?
You meet at Cafe MarinaLeof. Nearchou, Iraklio 712 02, Greece at the Old Venetian port area. Pickup is included for free up to 10 km from Heraklion port. For pickup beyond 10 km, contact the provider for extra cost.
What swimming and water activities are included?
You’ll have snorkeling equipment and SUP boards included, and the itinerary includes multiple swimming stops at coves on Dia Island.
Is lunch included, and do they offer vegetarian food?
Yes. Lunch is included onboard, and there is a vegetarian option.
Are drinks included, and is wine available?
Yes. The tour includes unlimited mineral water and soft drinks, plus wine with responsible consumption. Alcohol service follows the rule that the minimum drinking age is 18.
What if the weather is poor?
The experience requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund.
How many people are on the boat?
It’s a small group with a maximum of 10 travelers.
If you tell me your travel month and whether you’re more into snorkeling or SUP, I can help you decide if this pacing fits your style.




























