A boat day beats the usual sightseeing. This trip from Demre to Kekova is built for sun and sea time, with a proper cruise past the Sunken City and then long, feel-good swim breaks in clear Mediterranean bays. I like how it mixes history you can actually see from the water with beach-style pauses that don’t feel rushed.

Two things I really like: first, the Sunken City segment. You cruise alongside the underwater ruins and get to take photos without trying to swim in a protected zone where swimming isn’t allowed. Second, the itinerary keeps you moving between cool places to swim—Esmeralda Bay, Burç Bay, and Gökkaya Bay—and it includes the very fun turtle-search stop at Karemlik Bay.

One drawback to plan around: the schedule is weather-dependent, and you’ll spend a lot of time on the boat. If you’re not a fan of long stretches on open water, bring what you need to stay comfortable (hat, water, and something for sun protection).

Key highlights at a glance

• Sunken City cruise from the boat: you’ll see the Dolchiste ruins up close, without the hassle of trying to access a protected underwater site
• Castle of Simena at Kaleköy (ancient Simena): a scenic hour in a small village with ruins and a hillside walk
• Multiple swim breaks: Esmeralda Bay, Burç Bay (cooler due to underwater springs), and Gökkaya Bay
• Karemlik Bay turtle-spotting: you’re looking for Mediterranean turtles in a natural habitat
• A boat day that still moves at a human pace: about 7 hours with structured stops and time to actually enjoy the water

Demre Harbour to Kekova: how the day actually flows

This is a classic Mediterranean boat day, timed for late-morning departures when the light is good and the water is inviting. The plan is to meet at Andriake Harbour, then head toward Demre Harbour so you can depart between 10 and 10.30am. Expect the full experience to last around 7 hours.

What makes this format work is that you’re not stuck in one place. You get multiple “switch gears” moments: cruise, short history stop, swim time, sightseeing by water, and then back to Demre. That’s a big deal on a holiday day—less transport stress, more time where you can actually relax.

Also, the tour includes a mobile ticket, and it’s offered in English. Translation: it’s easy to manage on the day itself, and you won’t need to figure things out on your own once you’re meeting up.

Cruising Kekova’s Sunken City: what Dolchiste looks like up close

The star attraction is the Sunken City area, tied to an ancient settlement (Dolchiste) that was flooded after an earthquake in the 2nd century. Instead of pretending you can “visit” underwater ruins like it’s a museum, the trip keeps it practical: you cruise alongside the remains and view them from the boat.

One key thing to know before you go: this is a protected area, and swimming isn’t permitted there. You’re meant to look, not jump in. That sounds limiting, but it actually improves the experience because you’re not constantly changing plans around local rules. You can photograph the ruins, watch for details along the shoreline, and then move on to places where swimming is allowed.

If you care about old places, you’ll enjoy the way the ruins sit in the water like history you can see with your own eyes. If you mainly care about swimming, this segment still has value because it breaks up the day and adds variety beyond just bays and beaches.

Kaleköy (ancient Simena) and the Castle of Simena hour

Next up is Kaleköy port, which is the area tied to ancient Simena. You’ll get about one hour here, which is just long enough to feel like you arrived somewhere real, without turning the day into a slow hike.

The important part isn’t just the name. The stop is set up for a quick taste of village life plus ruins. You can explore castle ruins and a necropolis, and if you want the views, there’s a hike up the hillside that’s meant to pay off with a wide look over the Kekova region.

There’s also an entrance fee for the Castle of Simena. The details list €4.00 per person as the non-included entrance fee, but the stop schedule also notes €1. Either way, plan on paying something extra on-site so you’re not surprised.

Is an hour enough? For most people, yes. You’ll have time to walk, see the main remains, and still be ready for the boat again.

The Simena underwater ruins viewing stop: when you skip the castle walk

Later in the Simena portion, the schedule gives a second chance to enjoy the area in a different way. If you’d rather not spend more time hiking, you can instead use remaining time to swim in the same general Simena region. The entrance fee note is tied to the Castle of Simena, and the underwater ruins viewing is part of the cruising approach.

Why this matters: it gives you a choice on the day. Some people want the uphill views; others want more water time. Either way, you’re still getting the sense of place—ancient Simena is about ruins, shoreline, and sea connections.

Esmeralda Bay: lunch and the classic reset

After the Simena ruins time, you get to slow down for a swim-and-lunch rhythm at Esmeralda Bay. This is the point where the day turns from sightseeing mode into vacation mode. The schedule frames it as a lunch and swim break with peace and tranquility, which is exactly what you want after time on boats and walking.

Lunch is included, and you’ll also want to think about timing. Eat, hydrate, and then do your swim when the group is ready rather than rushing. The goal is to keep energy for the rest of the stops, especially later swim time.

If you’re sun-sensitive, this is the spot to plan your sun strategy: hat, shirt, sunscreen, and a slower swim pace. The Mediterranean sun can feel generous until you realize you’ve been on the water without noticing.

Burç Bay and Gökkaya Bay: two swim vibes, one cool advantage

Next comes another swim break at Burç Bay with a 40-minute window. Here’s a detail worth caring about: the sea is said to be cooler due to cold underwater natural springs. That small difference can make a huge impact. If you found the first swims too warm, Burç Bay is your “refresh.”

Then you move to Gökkaya Bay, one of the more popular swimming stops. You’ll get about two hours here, and this is where the “boat day” really becomes a day at sea. The water is described as inviting, and there’s also an option to join in on water sports if they’re available on the day.

Two practical tips here:

• Pack for the water sport crowd even if you don’t try them. If you want to borrow time to watch, you’ll be glad you had sun protection.
• Don’t wait until the last ten minutes to swim. Two hours sounds long, but time moves faster when you’re floating, snorkeling, or just enjoying the day.

A naturally formed cave stop: the curious side of Kekova

Between the big swim breaks, the itinerary includes a naturally formed cave known for its large size and curved entrance. You won’t spend all day there, but it’s a smart add-on because it changes the “type” of sightseeing.

Boat trips can become repetitive if every stop is just another photo spot. A cave adds a different shape and a different kind of curiosity—something you can look for as the boat approaches and then remember later when you compare coastlines.

Even if caves aren’t your thing, it’s a quick way to keep the day from feeling like a single extended swim loop.

Karemlik Bay turtle-spotting: nature time without the crowds

The day finishes with a wildlife-style moment at Karemlik Bay. This is the part where you’re not only looking at scenery, you’re scanning the water and thinking like a wildlife watcher.

The schedule highlights turtle context: there are 8 known types of turtles worldwide, 5 of which can be found in the Mediterranean. At Karemlik Bay, you’ll have a chance to look for these turtles in their natural habitat.

A good way to enjoy this stop is to treat it like a slow watch, not a hunt. Your best odds come from calm attention and patience. Also, keep expectations realistic: you’re spotting wildlife, not getting a guaranteed show.

This is one of the most memorable parts for people who love a little nature mixed into a history-and-swim itinerary, and it adds a “reason to be here” beyond just beautiful water.

Lunch, snacks, and comfort on a 7-hour boat day

The trip includes lunch, and the overall experience is set up to keep you fed and functioning. One thing I’d take from the way the day is run: the staff focuses on preparing food and snacks and describing the places you pass. That kind of commentary matters because it turns “seeing ruins” into understanding what you’re looking at.

For your own comfort, think like a practical boat-day traveler:

• Bring sunscreen and a hat you’ll actually keep on your head.
• Have a refillable water bottle, since you’ll be in sun for hours.
• If you’re sensitive to motion, this trip is described as suitable for those suffering from seasickness, which is encouraging—but still, you’ll be wise to bring your preferred remedy.

Also, plan your swim gear. You’ll likely change between dry boat time and water breaks several times, and it’s easier when you keep your essentials in one bag.

Price and value: what $60 buys you in real time

At about $60.01 per person, this is not a bargain “grab a ticket and go” boat ride. But it also isn’t priced like a private charter. The value comes from the structure: around 7 hours, an included lunch, multiple swim stops, and the combination of Sunken City viewing plus Simena ruins plus turtle spotting.

This price makes sense if you want:

• a full day without arranging separate transport between multiple stops
• a mix of water time and guided context
• enough swim opportunities that you can actually feel you used your day, not just dipped your feet once

If your priority is only one thing—either ruins only or swimming only—then you might compare with other day options. But for most people in Kas, this is a very efficient use of a summer day along the coast.

Who should book this boat trip from Demre?

I’d put this high on the list for you if you want a day that feels like a proper coastal vacation. It’s especially good for people who:

• want multiple swimming windows, not one short stop
• like history, but prefer ruins viewed from the water rather than long inland excursions
• enjoy nature moments like turtle-spotting at Karemlik Bay
• want an English-speaking guide style experience with clear explanations

It’s also a solid choice if you’re traveling with mixed interests. One person can spend time on castle views and photos, while another can focus on swim breaks and water sports options around Gökkaya Bay.

If you hate boats, dislike sun, or can’t handle weather changes, then you might want a different plan. This is a boat day first, everything else comes second.

Should you book? My straightforward take

Book it if you want a full-day Mediterranean mix: Sunken City ruins, Castle of Simena time, real swim breaks in multiple bays, and a turtle-spotting chance at Karemlik Bay. The structure is built for summer pacing, and the included lunch removes one common annoyance on day trips.

Skip it (or at least compare) if you’re looking for a land-heavy cultural day. This is about the coast, the water, and what you can see from a boat. Also keep in mind the day depends on good weather, and you’ll be on the water for most of the experience.

FAQ

How long is the boat trip from Demre to Kekova?

The trip runs for about 7 hours.

Where do I meet, and when does the boat leave?

You start at Andriake Harbour. Departure for the boat trip is scheduled between 10 and 10.30am, with the listed start time at 10:30am.

Is lunch included?

Yes. Lunch is included in the tour price.

Do I have to pay an entrance fee for the Castle of Simena?

Yes. The Castle of Simena entrance fee is not included. The details list it as €4.00 per person, and the stop notes also mention €1, so plan on paying an extra fee on-site.

Can I swim at the Sunken City ruins?

No. The Sunken City area is a protected area, and swimming is not permitted there. You’ll cruise alongside the ruins for viewing and photos.

Are there swim breaks during the day?

Yes. You’ll have swim breaks at several bays, including Esmeralda Bay, Burç Bay, and Gökkaya Bay.

Is the tour offered in English?

Yes. The tour is offered in English.

What happens if the weather is bad?

The experience requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund.

Is there a maximum group size?

Yes. This activity has a maximum of 55 travelers.

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