A shipwreck and a swim in one trip. The glass-bottom boat part is fun, and the real payoff is the time in the water around Pserimos Beach with fish sightings. I also like that the vessel has a shaded area and onboard restrooms, so this doesn’t feel like a sweaty slog. One watch-out: the underwater viewing can be crowded, and the glass-bottom window time isn’t what you’d call long.

Pserimos in particular is a great match for families, since you can keep the kids busy while you’re still getting a proper sea view. If you’re picky about “lots of fish,” manage expectations and treat this as a short sightseeing + swim combo.

Key highlights you’ll actually care about

• Shipwreck spotting at Avlakia from a glass-bottom boat with strong photo potential
• Pserimos Beach swim time (about 40 minutes) with chances to see friendly fish
• Shaded seating plus onboard restrooms, which makes a big difference on a warm day
• Crew and captain handle navigation, so you just relax and time your swim
• Smallish group size (max 70) for this length of cruise
• English-language experience with a straightforward, no-stress format

A short Aegean cruise: what you’re really signing up for

This is a 2.5-hour glass-bottom boat adventure built around one simple idea: see the underwater world near Pserimos, then cool off with real swim time. You’re in and out quickly from Kos, so you’re not burning half a day on the water.

The “star” moments are easy to understand. First, you get scenic views out of Kos Harbour from sea level. Then you hop over to Pserimos for a beach stop and a swim near fish. And near the end, you check out the Avlakia Beach shipwreck—the one you’ll want your camera ready for.

Price and value: $24.19 for a lot of water time

At $24.19 per person, you’re not paying for a long expedition. You’re paying for convenience plus two things most people want in the Aegean: (1) a boat ride that doesn’t require navigation skills on your part, and (2) a swim stop that feels like more than just dipping your feet.

What makes the value better is what’s included. You get onboard restrooms, and the boat has shaded seating. That matters more than people think, especially if you’re traveling with kids or you burn easily. Also, the main stops have free admission—so you’re not stacking extra entry fees on top of the ticket price.

The main thing to keep in mind is that this is not a private-diver or charter setup. Some of the glass-bottom viewing can feel tight and crowded, and the underwater “wow” is tied closely to the conditions and how many people are looking at the same time.

Where to meet in Kos (and how early to arrive)

You start at the Kos Cruise Experts Port. It’s a good sign that the meeting point is near public transportation, since Kos can be easy to reach and you don’t have to stress about parking.

Here’s my practical advice: arrive earlier than you think you need. There’s at least one report of a stressful situation when the boat left earlier than expected based on meeting instructions. Even if that’s an unusual hiccup, showing up early is the one move that reliably protects your day.

Once you’re aboard, you’ll be in an organized flow: the captain and crew run the timing and navigation, and you just follow along with the group.

Taking in Kos Harbour from sea level

Before you even reach Pserimos, you get a look at Kos Harbour from the water. This sounds small, but it sets the tone. Land views are one thing. Sea-level views give you a quick sense of the city’s layout and the coastline’s shape.

Think of it as the “warm-up” for the day. You’re not rushing yet. You’re settling into cruise mode, with that calm Aegean feeling that makes the rest of the trip easier to enjoy.

Pserimos Beach: the swim stop that makes the trip worth it

The big time block is your visit to Pserimos, about 40 minutes. This is where the experience shifts from sightseeing to enjoyment—especially if you like swimming with fish.

What to expect:

• A beach stop on Pserimos Island
• A refreshing swim right by sea life, so you’re not just swimming in open water with nothing to look at
• Free admission at the stop

Why I like this part: it’s not only about seeing the underwater world through glass. You get to experience it directly, with your feet in the water and your eyes open. If you’re traveling with kids, this is also the part that usually gets the most smiles, since they can go in, splash, and focus on sea movement without needing fancy gear.

Bring your own essentials for a comfortable swim:

• Swimwear and a towel
• A mask if you like snorkeling (the boat setup is great, but you’ll enjoy the water time even more with your own gear)
• Sunscreen and water shoes if the entry feels rocky

Avlakia Beach and the shipwreck: best for photos, plan around crowds

The Avlakia Beach stop focuses on one main attraction: an old cargo ship near Pserimos. You’ll see it as a shipwreck landmark, and it’s also tied closely to the glass-bottom portion of the trip.

This is the part where expectations matter. The glass-bottom view experience can be hit or miss depending on crowding and the angle people are positioned at the windows. Some people love it because the shipwreck is visually striking and you can get great photos. Others feel the glass-bottom viewing is more of a quick glimpse than a long underwater session.

The best way to handle this:

• Treat it as a short, photo-driven shipwreck stop
• Get your spot early when the glass-bottom viewing is happening
• Move with the flow rather than trying to hold one position for the entire time

You also get a timed window to check out the shipwreck area and then shift back toward the next phase of the day. It’s not designed to be slow and lingering. It’s designed to fit into an easy, half-day window.

Onboard comfort: shaded seating and restrooms you’ll appreciate

This boat has a shaded area and onboard restrooms. That might sound basic, but on a warm day in Greece, these details change how you feel about the ride.

A shade-covered spot means you can enjoy the water scenery without frying. Restrooms matter when your trip is long enough that you’ll want one break—especially if you have children with you or you’re just trying to stay comfortable in summer heat.

You’re also with a crew that runs navigation and keeps things moving. That “somebody else is in charge” feeling is part of why this is a good option if you don’t want to plan routes, times, or boats yourself.

How long it feels on the water (and why timing matters)

The total duration is about 2 hours 30 minutes. That’s a sweet spot for many people on a cruise or tight itinerary.

Still, it’s worth being mentally ready for actual travel time on the sea. One traveler noted the boat time to reach the swim area and return can feel substantial, with a long water stretch before you’re standing on Pserimos beach. That doesn’t mean it’s a bad tour—it just means you should pack for the time you’re on board, not just for the swim.

What’s not included: snacks, drinks, and the kid-and-heat reality

Included:

• Restroom on board

Not included:

• Snacks
• Alcoholic beverages
• Soda/pop

This is the one place I’d plan ahead. If you’re traveling with children, bring snacks and some drinks so you’re not stuck waiting for food later. Even on a short cruise, a beach swim and sun can work up appetites fast. Plus, taking snacks onboard makes the ride feel more relaxed, not like a waiting game.

If you’re the type who likes to stay hydrated, bring water too. It’s not stated as included, so don’t assume.

Photos and the shipwreck factor

If you care about photos, this tour gives you at least two strong moments:

• The shipwreck at Avlakia
• The scenery from Kos Harbour and the sea approach to Pserimos

The key is timing. Take photos early, then switch to enjoying the moment. You’ll get better shots when you’re not rushing, and you’ll have a better swim experience when you’re not thinking about your phone every ten seconds.

Who this tour fits best (and who might want a different plan)

This experience is a great match if you want:

• A quick, easy boat outing from Kos
• A swim stop where you can see fish nearby
• A family-friendly format with staff running the cruise and a clean, comfortable vessel

It may be less ideal if:

• You expect the glass-bottom part to be a long, wildlife-heavy underwater show
• You hate crowds at the viewing windows
• You want a super quiet, slow nature experience with lots of uninterrupted time at one spot

In other words, this is best as a practical “do it today” trip—especially if you’re balancing other plans on the island.

Tips to make it smoother on the day

A few small moves will help you get more out of the time you spend:

• Arrive a bit early at Kos Cruise Experts Port, just in case boarding runs tight.
• Bring a simple swim kit and sunscreen. The sun + water combo can be intense.
• Pack snacks and drinks for kids and yourself since nothing is included.
• If you’re focused on shipwreck viewing, be ready with your camera and don’t wait until the last minute.
• If you don’t want to be photographed or recorded, tell the crew before departure. The experience notes that photo/video use can happen for promotional and documentation purposes.

Should you book Dory’s Glass Bottom Boat Adventure?

If you want a short, value-packed day on the water with both a swim and a shipwreck photo moment, this is a solid pick. The onboard comfort (shade and restrooms) and the easy format (crew handles navigation) are real advantages, and Pserimos Beach is the part that most people remember.

Book it if your main goal is:

• A fun boat ride
• A chance to swim near fish
• A quick look at the Avlakia shipwreck without spending all day planning

Consider another option if you’re seeking:

• A long glass-bottom underwater viewing experience
• Lots of time at one spot without moving around
• A quiet, uncrowded snorkeling-focused outing

If you want my bottom-line take: this works best when you treat it like what it is—an efficient Aegean outing with a swim payoff, not a full-day underwater expedition.

FAQ

How long is the Dory’s Glass Bottom Boat Adventure?

It runs about 2 hours 30 minutes (approx.).

Where do I meet for the cruise in Kos?

The meeting point is Kos Cruise ExpertsPort of, Κως 853 00, Greece, and it ends back at the same meeting point.

Is there a restroom on board?

Yes. The cruise includes a restroom on board.

Do I get time to swim?

Yes. You visit Pserimos and you’ll have time for swimming at the beach stop.

Is the tour offered in English?

Yes, it’s offered in English.

What happens if weather is bad or the trip is canceled?

This activity requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund. It also requires a minimum number of travelers.