Kos Town: Glass-Bottom Boat Cruise with Swimming Stops

The best part of this 150-minute Kos boat trip is the balance. You get a proper look at an old shipwreck, a scenic ride toward Pserimos, and a long swim in clear water, without giving up an entire day. The yellow Dorry speedboat leaves right from Kos Town port, so you can fit it around sightseeing, lunch, or a lazy beach morning.

I like the beautiful swimming stop and the easy family appeal. Kids can look for fish through the glass panels, jump from the boat, use the slide, or stay aboard and fish. I also like the relaxed length and the low $23 price. The main caution is that the glass-bottom viewing can be less impressive before the boat reaches the wreck, and the viewing panels may show scratches or cloudiness.

Key points to know

• Old shipwreck viewing: The clearest underwater views come when the boat pauses above the wreck.
• Pserimos swim stop: Expect clear water, fish, a sandy beach, and time for swimming or snorkeling.
• Two and a half hours: A useful choice if you do not want a full-day island cruise.
• Family-friendly setup: There is a slide, floating aids, music, snacks, drinks, and toilets onboard.
• Best seating tip: Arrive early if you want an outdoor seat, especially for a busy sailing.
• Strong value: The boat trip costs $23 per person, with food and drinks sold separately.

A short cruise from Kos Town with a real swim stop

This trip begins at the port in Kos Town, where you will spot the yellow Dorry Glass Bottom Speedboat. The meeting point is simple, but boarding can become untidy when many people arrive at once. If you care about where you sit, get there early rather than treating the departure time as the moment to show up.

The ride lasts about two and a half hours. That is long enough to feel like a proper outing, but short enough to suit families, couples, and anyone who wants a taste of the Aegean without surrendering a whole day. It also gives you time to enjoy the boat itself instead of rushing from one stop to the next.

Once aboard, you can sit on the upper deck in the sun, use the shaded section, or visit the bar. Drinks, snacks, beer, and cocktails cost extra. The boat accepts card, and the onboard prices have been described as reasonable, including freshly made cocktails for about €5.

Music plays during the ride, giving the trip a light holiday mood. You should not expect a quiet nature cruise. The atmosphere can feel more like a relaxed afternoon boat party, though the crew generally lets you enjoy yourself without constant sales talk or forced entertainment.

Two glass-bottom areas and an old shipwreck

The glass-bottom feature is the unusual part of the boat, but it helps to set expectations. You are not getting a large aquarium-style viewing deck with perfect visibility at every moment. The boat has two viewing areas, and the protective cover over the glass may have scratches or a slightly cloudy look.

Still, the experience improves when the boat reaches the old wreck. The wreck sits in clear water, and the boat spends enough time over it for you to get a proper look. Fish gather around the remains, making this more than a quick glimpse through the floor.

I would treat the glass panels as one part of the trip, not the whole reason to book it. On a calm day with good visibility, the wreck can be striking. On other parts of the ride, you may see less than you hoped. Children often get more from the activity because they can turn spotting fish into a small game.

The guide provides information about the wreck, and the crew has also shared details about Kos and its past during the ride. One crew member named Manolis received special praise for helping a child with autism feel comfortable. That points to the practical strength of this outing: the team appears ready to help families without making the experience feel stiff or formal.

The Pserimos swim stop is the main event

The boat then heads toward the clear waters around Pserimos, often described onboard and in trip details as the Blue Lagoon. This is where the cruise earns its price. You can jump from the side, use the slide, or enter the water more carefully with a floating aid.

The water is described as remarkably clear, with fish visible near the boat and a sandy beach nearby. You can swim, snorkel, float, or simply sit aboard and watch the others. Goggles and pool noodles may be available, and floating devices are provided for people who are less confident in the water.

Bring your own snorkel if you have one. The fish and clear water are a major part of the appeal, and personal equipment saves you from relying on whatever is available onboard. Non-swimmers can still enjoy the stop, but the boat is more rewarding if you are willing and able to get into the sea.

The exact amount of swim time is important. The stop is long enough for a proper swim rather than a quick photo opportunity, but some people would prefer even more time there. One practical point is that the advertised highlights can create the impression of two swim stops, while the usual outing includes one main swimming stop.

The beach and water are the natural focus, not a developed island visit. You are not getting a guided tour of Pserimos village or a long shore excursion. You are stopping at a beautiful swimming area, and that simplicity is part of the charm.

Seating, sun, shade, and choppy water

The boat has an upper deck and a covered area. The upper deck gives you sun, air, and better views of Kos and the sea, but it can fill quickly. On a crowded sailing, arriving only 20 minutes early may not be enough to secure an outdoor seat.

The covered glass-bottom area is useful when the sun becomes too strong, but it can feel cramped if you are seated there for the whole ride. It may also be less comfortable for anyone prone to motion sickness. One family found the ride choppy and moved upstairs when a child began to feel unwell.

You can reduce that risk by choosing a seat with fresh air and keeping your attention on the horizon when the sea is moving. The boat is a speedboat, so this is not the same as a slow, steady ferry ride. Conditions vary, and even a normally calm route can feel lively on a windy day.

The crew is described as helpful and calm, including when children need assistance. Life vests and floating devices are part of the safety setup, though one useful improvement would be a wider range of life vest sizes for smaller or larger swimmers. If you are not a confident swimmer, tell the crew what you need before entering the water.

A family outing with plenty to keep children busy

This is one of the easier Kos excursions for families. The activity changes often enough to hold attention: ride the boat, watch the wreck, look for fish, swim, use the slide, listen to music, and have a snack. A child who does not want to swim can remain aboard and try fishing instead.

The crew has also shown patience with young children and families who need extra help. That matters more than a polished speech or fancy boat. A friendly team can turn a small worry into a manageable part of the afternoon.

The main family issue is seating. If you arrive late and end up in the covered section, you may have less room and fewer open views. If you have young children, arrive early, decide who wants shade and who wants sun, and bring a towel, swimwear, sunscreen, and dry clothing.

Music adds energy, but it may not suit a child who needs a quiet setting. The boat is social and cheerful rather than hushed. You should choose another kind of boat trip if your family wants complete peace and minimal stimulation.

Food, drinks, and onboard comfort

The bar sells soft drinks, beer, cocktails, and snacks. Food and drink are not included in the $23 ticket, but the prices are described as fair and there is no strong pressure to buy. A €5 cocktail is a pleasant extra for adults who want to make the ride feel festive.

Toilets are available onboard, which is useful on a two-and-a-half-hour trip and especially helpful for families. The shaded seating is another practical feature. You can move out of the sun instead of spending the whole cruise exposed on the upper deck.

Bring your own essentials. Water, sunscreen, a hat, a towel, and a snorkel make sense. A waterproof phone pouch is also useful around the swim stop, though it is not listed as part of the boat’s equipment.

Is $23 good value for Kos?

At $23 per person, this is a strong-value half-day activity. You are paying for the boat ride, the shipwreck viewing, the swimming stop, and access to the onboard facilities. It is not an expensive private charter or a full island excursion, and that is precisely why the price works.

The value is strongest if you use the swim stop fully. Someone who stays onboard and finds the glass-bottom windows underwhelming may feel less impressed. Someone who swims, snorkels, watches the fish, and enjoys the ride gets much more from the same ticket.

The length also improves the value. Many boat trips occupy a full day, which can be tiring and expensive once meals and drinks are added. This one gives you a clear afternoon activity and leaves room for dinner or more Kos Town sightseeing afterward.

Food and drinks add to the bill, but you can control that cost. Since snacks are available at reasonable prices and buying is optional, you do not need to plan for a large onboard expense.

Who should book the Dorry cruise?

I would choose this for families with children, couples wanting a simple sea outing, and anyone who wants a swim in clear water without a full-day commitment. It also suits people who enjoy a casual boat atmosphere with music, snacks, and a friendly crew.

It is a good fit for confident swimmers and for less confident swimmers who are comfortable using floating aids with crew support. The stop is beautiful, but the sea remains the sea. You should not book it expecting a supervised pool or a completely still platform.

I would be more cautious if your main goal is serious marine viewing. The glass-bottom areas are interesting, but visibility can be affected by scratches and cloudiness. The strongest part of the experience is the wreck and the swim stop, not constant underwater viewing throughout the cruise.

My final call: book it for the water and the value

Book the Kos Town Glass-Bottom Boat Cruise if you want a short, affordable sea trip with a genuinely lovely swim stop. The old wreck adds interest, the fish give children something to look for, and the two-and-a-half-hour format is easy to fit into a Kos holiday.

Arrive early for a better seat, bring a snorkel, and think of the glass-bottom viewing as an added feature rather than a high-end underwater show. If you make the clear Pserimos water your main goal, this yellow boat offers a lot for $23.

FAQ

Where does the glass-bottom boat cruise leave from?

You meet the boat at Kos Town port. Look for the yellow Dorry Glass Bottom Speedboat.

How long does the cruise last?

The cruise lasts 150 minutes, or about two and a half hours. Starting times vary, so check availability when booking.

Does the trip include swimming?

Yes. The boat makes a swimming stop in the clear waters around Pserimos, also referred to as the Blue Lagoon.

Are food and drinks included?

No. The boat trip is included, while drinks and snacks are available to buy onboard. The bar offers soft drinks, beer, cocktails, and snacks.

Is the cruise suitable for children?

Yes. Children can watch fish through the glass-bottom areas, see the shipwreck, swim, use the slide, and listen to music. Children who do not want to swim can stay aboard and fish.

Can I cancel the booking?

You can cancel up to 24 hours before the activity for a full refund. Reserve now and pay later is also available.