Heraklion: Nature Reserve Full Day Sailing to Dia Island & Lunch – An Honest Look
Thinking of soaking up Crete’s natural beauty with a laid-back sailing adventure? This full-day trip to Dia Island, organized by Altersail, promises a relaxed, scenic escape with stops for snorkeling, swimming, and enjoying some of Greece’s freshest food and drinks. It’s one of those experiences that looks just as good on paper as it is in real life—something we’re always eager to share with fellow travelers.
What makes this tour stand out? First, the unobstructed views of Crete from the water are spectacular — no crowds, just nature and coastline. Second, the small group size (limited to 10 people) ensures a more intimate, relaxed vibe, making it perfect for those who prefer personalized experiences. That said, a potential consideration is that the water temperature in May can be a bit chilly for swimming, so packing a wetsuit or water shoes might come in handy.
This tour feels especially suited for travelers who enjoy a mix of gentle adventure, scenic beauty, and good company. If you’re after a leisurely day on the water that combines scenic stops, local cuisine, and the chance to spot dolphins, this could be a perfect fit for you. Just keep in mind that it’s not a high-energy, adrenaline-filled experience — it’s about savoring the moment.
- Key Points
- An In-Depth Look at the Experience
- First Stop: Agrilia Bay — Quiet and Refreshing
- Second Stop: Panagia Cove — Picture-Perfect Green Waters
- Final Stop: Agios Georgios — The Historic and Scenic Favorite
- What’s on the Menu?
- The Trip Back and Dolphin Spotting
- The Experience: What Travelers Are Saying
- What Could Be Better?
- Price and Value
- Who Is This Tour Ideal For?
- Frequently Asked Questions
- Heraklion: Nature Reserve Full day sailing to Dia Island & Lunch
- Wrapping It Up
- More Lunch Experiences in Heraklion
- More Boat Tours & Cruises in Heraklion
- More Tour Reviews in Heraklion
- More Heraklion experiences we've covered
Key Points

- Stunning scenery of Crete from the water, with diverse views and marine life
- Inclusive amenities like snorkeling gear, SUP boards, and a delicious, fresh Greek lunch
- Small group size enhances comfort and personalized service
- Remote beaches and quiet bays make for peaceful swimming and snorkeling
- Eco-friendly route prioritizes nature preservation
- Ideal for relaxed travelers looking to enjoy nature and local flavors, not adrenaline junkies
An In-Depth Look at the Experience

If you’re picturing a day on the water, think gently sailing across calm seas, with the breeze softly filling the sails. That’s exactly what you get with this trip. The AlterSail crew will meet you at Heraklion’s Old Venetian port, where they’ll give a brief safety rundown and go over how the boat operates—nothing too formal, just enough to make you feel comfortable and confident.
Once on board, the vessel sets sail toward Dia Island, about 7 nautical miles away. The journey itself offers lovely views of Crete’s coast, perfect for snapping photos or just relaxing and taking in the scenery. We loved the way the boat’s size and design fostered a cozy atmosphere, with enough space to store your belongings, and clean, accessible toilets onboard. It’s these small touches that add to the comfort of a day at sea.
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First Stop: Agrilia Bay — Quiet and Refreshing
The first stop is at Agrilia Bay, a lesser-known and unspoiled beach on Dia Island. Unlike the busy tourist spots, this bay remains fairly secluded, making it ideal for a quiet swim or snorkel. As one reviewer said, “The swimming stops were great,” and with clear waters, you’re likely to spot fish or marine creatures while snorkeling. The crew provides snorkeling gear without extra charge, so you can explore without worrying about bringing your own equipment.
You’ll get about an hour here, plenty of time to cool off, relax, or enjoy some fresh fruit and refreshments provided on board. The calm waters and natural surroundings more than compensate for any slight chilliness, providing a peaceful environment to unwind.
Second Stop: Panagia Cove — Picture-Perfect Green Waters
Next, the boat moves to Panagia Cove, a bay known for its vibrant, greenish-blue waters. Here, the scene is postcard-perfect, with crystalline, inviting waters ideal for swimming or snorkeling. The crew often praises this stop as a highlight, and it’s easy to see why. It offers just enough seclusion to feel like your own private paradise, and the shallow waters are safe for most swimmers.
Final Stop: Agios Georgios — The Historic and Scenic Favorite
The last stop is at Agios Georgios, one of Dia Island’s most popular beaches. This protected cove boasts clear seas, perfect for a final swim or snorkel. Interestingly, according to Jacques-Yves Cousteau, this spot was once a major Minoan port, with remnants still underwater. While most of us won’t be diving for artifacts, knowing that history adds a layer of intrigue to your swim.
This beach is also recognized for its scenic beauty, with golden sands and rocky outcrops that make for a restful and picturesque setting. Many reviews mention how stunning this location is and how much they appreciated a chance to relax here before heading back.
What’s on the Menu?

After a morning of exploring and swimming, you’ll settle for a delicious lunch prepared from fresh, local ingredients. The menu is a highlight for many, with reviewers raving about the quality and flavor. The meal includes vegetarian options and is served on board, so there’s no need to worry about packing your own food.
The crew also offers unlimited drinks, including mineral water, soft drinks, and responsible wine consumption. As one reviewer noted, “The food was amazing,” and the wine selection made the experience even more enjoyable. The food and drinks are a big plus, especially considering the price point of around $113.79 per person—you’re essentially paying for a full day of scenery, food, drinks, and the experience.
While in Heraklion, here are other experiences we've covered
- Full-Day Jeep Safari Tour with Cooking Lesson
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- Full-Day Private Adventure: Knossos-Zeus Territory-Old Villages
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The Trip Back and Dolphin Spotting
After lunch, the boat heads back to Heraklion, and that’s when the possibility of dolphin sightings comes into play. Many travelers mention spotting dolphins, which adds a magical element to the day. While not guaranteed, the chance to see these creatures in their natural habitat is an exciting bonus.
The Experience: What Travelers Are Saying
Reviews paint a picture of a consistently positive experience. One traveler called it “a gorgeous sailing trip,” praising the friendly crew and the “perfect” Greek BBQ lunch. Others highlight the calm, scenic environment and the clear waters, making it a favorite for snorkeling fans.
Several reviews mention how intimate and relaxed the trip feels thanks to the small group size, with only up to 10 travelers onboard. This limits the feeling of being part of a large tour and allows more interaction with the crew. Several travelers also appreciated the informative commentary about Dia Island, adding some educational value to the trip.
Some folks mention that the water in May can be a bit cold, which is worth considering if you’re planning a late spring or early summer trip. Bringing water shoes or a wetsuit might make the experience more comfortable if you’re sensitive to cooler temperatures.
What Could Be Better?
While the experience is largely praised, a few travelers felt that the soft drinks could be more varied. The menu for drinks includes lemonade and orange soda, perhaps expecting children on board. Also, some mention that the boat is smaller than expected, but this is part of why it feels cozy and personal.
Price and Value

At roughly $113.79 per person, this trip offers a well-rounded package that includes sailing, snorkeling gear, SUP boards, a hearty lunch, drinks, and a small-group experience. Considering how much time you spend on the water, the quality of the food, and the chance to see untouched beaches and marine life, the value feels quite good. Plus, the convenience of pickup from your accommodation (within 10 km) saves you some logistical headaches.
Who Is This Tour Ideal For?

If you love spending time on the water, enjoying scenic views without a rush, and appreciate good food and drinks with friendly company, this trip fits the bill. It’s perfect for those who want a relaxed, all-day escape from crowded beaches or busy tourist spots.
It’s also a good choice if you’re interested in snorkeling and want to explore lesser-known beaches with clear waters—many reviews emphasize how peaceful and beautiful these stops are.
Travelers should be comfortable with small boat rides and prepared for potential weather variations that might affect the itinerary. It’s not suitable for those over 275 lbs or those seeking high-adrenaline excitement, but if you’re after calm waters, lovely scenery, and a taste of Greek hospitality, this one’s a winner.
Frequently Asked Questions

How long is the trip?
The entire experience lasts around 7 hours, starting from pickup at Heraklion and ending back at the same spot.
Are snorkeling and SUP equipment included?
Yes, snorkeling gear and SUP boards are provided at no extra charge, making it easy to enjoy the water without bringing your own equipment.
Is lunch vegetarian-friendly?
Yes, the meal is made from fresh, local ingredients with vegetarian options available.
What should I bring?
A beach towel, swimsuit, sunscreen, and water shoes are recommended. Keep in mind that the water temperature in May might be chilly for some.
Can I cancel at short notice?
Yes, cancellations are free if done at least 24 hours beforehand. The policy allows a full refund if canceled in time.
Is there anything I should know about the group size?
The tour is limited to 10 travelers, which helps create an intimate, relaxed atmosphere. It’s perfect if you prefer avoiding large crowds on your adventures.
Heraklion: Nature Reserve Full day sailing to Dia Island & Lunch
“Was a gorgeous sailing trip with Altersail. The crew were very friendly and helpful – making us few more comfortable with sailing (new to most of …”
Wrapping It Up

This sailing trip to Dia Island offers a genuine chance to unwind, take in incredible views, and enjoy authentic Greek cuisine—all in an environment that values nature and small-group camaraderie. It’s especially suited for travelers who want a relaxing, scenic day without rushing from place to place. The combination of quiet beaches, friendly crew, and tasty food makes this a memorable addition to any Heraklion itinerary.
While it’s not a trip for adrenaline seekers or those craving high-energy activities, it’s ideal if you’re after a peaceful day of swimming, snorkeling, and enjoying Greece’s natural beauty. The small-group setting and attentive crew ensure you’ll feel well-looked-after, making this a popular choice among those who value quality experiences over quantity.
If your idea of a perfect holiday includes gentle sailing, stunning waters, and authentic flavors, this trip deserves a spot on your travel list. Just be prepared for the cooler waters in late spring and pack accordingly—then sit back, relax, and let the beauty of Dia Island work its magic.
Hope this helps you decide if this sailing adventure fits your travel style. If you love discovering quieter beaches and enjoying good company on the water, it could really make your trip to Crete extra special.
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- Private Jeep Tour – Zeus Cave – Cretan villages
- Cretan Flavors – Cooking Lessons and Wine Tasting – Small Group
- Full-Day Guided Private Tour in a Breathtaking Crete Island
- Private tour: Archeological Museum of Heraklion and City tour
- Heraklion Ecobike Tour & Cretan Wine Tasting Experience
- Knossos, Olive Grove, Winery – Distillery with Tastings & Lunch
- Lasithi – Zeus Cave -Olive Oil Factory – Traditional Villages
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