Kos Town: Glass-Bottom Boat Cruise with Swimming Stops

The best part is not under the glass. This 150-minute cruise combines a clear-water swim at Pserimos with a relaxed ride from Kos Town, making it a good fit if you want a taste of the Aegean without giving up a whole day. I especially like the generous swimming time and the friendly crew, who help make the boat feel easygoing for families. The main drawback is that the glass-bottom viewing can be less impressive when the panels are scratched or cloudy, though the wreck itself can look remarkably clear from above.

This is a simple, well-priced outing rather than a serious marine-life expedition. At $23 per person, I see it as a short sea trip with swimming, music, snacks, and a little underwater viewing rolled into one. Arrive early if you want an outdoor seat, and bring a snorkel if you have one.

Key points to know before you book

• The Blue Lagoon swimming stop is the star of the trip: Expect crystal-clear water, fish, and time to jump from the boat or use the slide.
• The old shipwreck is best viewed from the boat: The glass panels may look scratched at first, but the wreck can come into sharp view when the boat is positioned above it.
• The 2.5-hour length is easy to fit into a Kos itinerary: You get a proper outing without committing to a full-day cruise.
• The yellow Dorry boat leaves directly from Kos port: You can spot it at the harbor without arranging separate transport.
• Families are well served: The crew helps children, and the boat has floating aids, goggles, pool noodles, snacks, drinks, and toilets.
• Choose your seat with care: Outdoor seats fill early, while the shaded glass-bottom area can become crowded.

What this Kos boat trip really offers

The Dorry Glass Bottom Speedboat is built for a pleasant half-day on the water, not for a long, formal sightseeing cruise. You board in Kos Town, head out toward the waters around Pserimos, look through the glass-bottom areas, stop at an old wreck, and then spend time swimming in a beautiful cove.

That mix explains the strong value. You are not paying only for a boat ride or only for a swim. The fare covers a short cruise, sea views, a wreck viewing, and access to a striking swimming spot. Drinks and food cost extra, but the onboard prices are described as reasonable, and there is no pressure to buy.

I would book this if you want something cheerful and uncomplicated. It works especially well between sightseeing in Kos Town and an evening meal. The 150-minute schedule gives you enough time to feel you have gone somewhere, while still leaving most of the day free.

Boarding the yellow Dorry in Kos Town

The meeting point is the port in Kos Town, where you will spot the yellow Dorry Glass Bottom Speedboat. The boarding process can feel a little loose, particularly when several people arrive at once, so I would not cut it fine.

Getting there early matters for another reason: the boat can fill before departure. One family arrived 20 minutes early and still found the boat nearly full, with the best outdoor seats already taken. If you want sun, wind, and an open view, arrive well before your booked departure time.

The boat has an upper outdoor deck and a shaded area below. The covered section is useful when the sun becomes too strong, but it can also be the place where people sit because the outdoor seats are gone. If the sea is choppy, you may prefer a spot with some shelter, especially if anyone in your party is prone to seasickness.

The crew speaks English, Greek, Italian, and German. That is useful for safety instructions and explanations, and the crew’s manner seems to be one of the most reliable strengths of this outing. They are described as friendly and helpful without constantly interrupting your time on the water.

Sailing out with music, sun, and a small bar

Once the boat leaves Kos, the ride is part of the attraction. You get open views toward Kos and Pserimos, along with the feel of the Aegean breeze. Music plays onboard, giving the cruise a light holiday mood rather than the quiet atmosphere of a nature survey.

The upper deck is the place to sit if you want the full sensation of speed and sea air. On hot summer days, the sun can be intense, so the shaded area gives you a useful escape. I would bring sun protection and a cover-up, since you may spend time moving between the deck, the glass viewing areas, and the swimming platform.

The bar sells drinks, snacks, soft drinks, beer, and cocktails. A freshly made cocktail has been offered for around €5, and snacks have been described as reasonably priced. The boat also accepts cards, according to the onboard details provided by past customers.

There is a toilet onboard, which makes the 2.5-hour duration easier, especially for families. This is not a luxury yacht service, but it has the basics you need for a comfortable short cruise.

The glass-bottom viewing areas and the shipwreck

The glass-bottom feature is the most distinctive part of the boat, but it needs realistic expectations. There are two viewing areas, and you can look down into the water as the boat moves over the sea floor.

The condition of the glass panels seems to vary. Some people find the plastic covering scratched, fogged, or less polished than expected. At first glance, you might wonder how much you will see. This is not a large underwater observatory with perfect viewing in every direction.

The experience improves when the boat reaches the old shipwreck. Several people found the wreck surprisingly clear from above, and the guide provides information about it. The shipwreck gives the glass-bottom section a definite purpose, rather than leaving you to stare at passing water and hope a fish appears.

You may also see fish around the boat. Still, I would treat the glass-bottom viewing as a bonus, not the main reason to book. If your top goal is marine life, bring a snorkel and plan to spend your real viewing time in the water during the swim stop.

The wreck itself divides opinion. Some find it fascinating and spectacular, while others find it less interesting. Your enjoyment will depend on how much you like simple underwater sightseeing and how clearly the boat positions itself above the remains.

The Pserimos and Blue Lagoon swim stop

The best part of the cruise is the swimming stop near Pserimos, often described as the Blue Lagoon. Here, the water is clear enough to see fish, and the setting includes a beautiful sandy beach. This is the section that turns the outing from a basic harbor cruise into a proper Aegean experience.

You can swim from the boat, jump from the side, or use the slide into the sea. Goggles, pool noodles, floating devices, and life vests are available onboard, although one comment suggests that larger life vests would be useful for some swimmers.

The water can feel cold, but the clarity makes it hard to resist. You may spot fish near the boat, and you can swim toward the beach if you are comfortable in open water. The stop gives you enough time to enjoy yourself rather than forcing a quick dip before the captain calls everyone back.

One important detail: the cruise has one main swimming stop, not two. If you expect several separate bays, you may be disappointed. The single stop is the main event, so the length of time spent there matters more than the number of stops.

This is also the point where families tend to get the most value. Children can use the slide, jump from the boat, look for fish, or stay onboard with a floating aid. One child who did not want to swim was helped to fish instead, giving the family another way to enjoy the stop.

How family-friendly is the boat?

I would rate this as a strong family option, provided your children are comfortable around boats and open water. The crew has been praised for helping children, including a situation where a crew member offered calm assistance after a child had a small incident.

The boat provides several ways to stay occupied. Kids can watch for sea creatures through the glass, listen to music, jump from the boat, use the slide, swim, snorkel, or fish. That variety is important because not every child wants to swim for the entire stop.

The shaded area is helpful for younger children, but seating may become tight if you board late. I would arrive early and decide whether your family wants outdoor seats or a cooler, covered position. You may not be able to keep everyone in the exact spot they prefer once the boat fills.

The crew also appears comfortable making the experience work for different personalities. A child who does not want to enter the water can still enjoy the ride, the wreck, the music, and the fishing option.

The crew and onboard atmosphere

The crew is one of the strongest reasons to choose this trip. The service is friendly but generally not pushy, giving you room to enjoy the water without constant sales talk.

The atmosphere is informal. Music creates something of a party feel, while the open deck keeps the mood relaxed. You can order a drink, sit in the shade, watch the coast, or join the activity at the swimming stop.

Manolis has received particular praise for being attentive with an autistic child. That does not mean every situation will be identical, but it does suggest a crew that pays attention to individual needs rather than treating the group as one large crowd.

A guide also gives information about the wreck, and one account praised the way the guide held the attention of both adults and younger children. The commentary is not the main focus of the cruise, but it adds useful context to what you are seeing.

The main weak point is boarding organization. The process may feel chaotic when people crowd around the boat, and some passengers can block access to the viewing areas. A little patience helps.

Price, value, and what you get for $23

At $23 per person, this is good value if you want a short sea outing with a proper swim stop. The price includes the boat trip, while drinks and snacks are extra.

The value becomes especially clear when you compare the length with a full-day cruise. You get 150 minutes on the Aegean, a wreck viewing, a swim in clear water, and a return to Kos without giving up an entire day. For many people, that is exactly the right amount of time.

It is not the right purchase if you expect a polished luxury boat, a serious wildlife tour, or flawless glass-bottom viewing. The panels may show scratches, the boarding area can be crowded, and the wreck may not impress everyone.

For families, the value improves because several people can enjoy the same trip in different ways. Swimmers get the lagoon, children get the slide and music, cautious passengers can use floating aids, and everyone gets the boat ride and wreck viewing.

Practical advice for a smoother trip

I would keep these points in mind:

• Arrive early if an outdoor seat matters to you.
• Bring a snorkel if you own one. The equipment provided includes goggles and floating aids, but a personal snorkel can make fish viewing easier.
• Expect one main swim stop, not several.
• Bring sun protection and a cover-up for the open deck.
• Consider the shaded area if you dislike strong sun or feel uncomfortable on a choppy ride.
• Keep some flexibility around the later sailing, since it may depend on when the earlier boat returns.
• Bring a card or cash for drinks and snacks, though card payment has been available onboard.
• Do not judge the glass-bottom section before the boat reaches the wreck. The view may be much clearer there than it is during the ordinary cruise.

The cruise is not designed around a strict educational program, but you will get useful information about the wreck and the surrounding sea. It is best approached as a fun water outing with a few points of interest, not as a detailed archaeological tour.

Who should book the Dorry cruise?

I think this suits families, couples, friends, and anyone who wants a short break from Kos Town. It is particularly good for people who want to swim in clear water but do not want a full-day island excursion.

It also suits mixed groups. Strong swimmers can jump from the boat and snorkel, while less confident swimmers can use life vests, noodles, and other floating aids. People who stay dry still have the deck, music, snacks, views, and glass-bottom sections.

You may want to skip it if you dislike open-water swimming, crowded boats, loud music, or informal boarding. You should also lower your expectations if the phrase glass-bottom boat makes you picture a pristine underwater viewing chamber.

Should you book it?

Yes, if you want good value and a memorable swim without spending all day at sea. The Blue Lagoon stop, friendly crew, family-friendly setup, and short duration are the strongest reasons to book.

I would choose this for the water rather than the glass. The wreck is a worthwhile extra, and it can look excellent when the panels are clear, but the swimming stop is what gives the trip its lasting appeal. Arrive early, claim a sensible seat, bring a snorkel, and treat the cruise as a relaxed Kos afternoon on the Aegean.

FAQ

Where does the Kos glass-bottom boat cruise leave from?

The yellow Dorry Glass Bottom Speedboat leaves from the port in Kos Town.

How long does the cruise last?

The cruise lasts 150 minutes, or about two and a half hours.

How much does the boat trip cost?

The listed price is $23 per person.

Is a swim stop included?

Yes. The cruise stops near Pserimos, at a clear-water swimming area often called the Blue Lagoon.

How many swimming stops are there?

The itinerary includes one main swimming stop.

Can children enjoy this activity?

Yes. The boat offers a glass-bottom viewing area, music, a slide, swimming, and floating aids. The crew has also helped children who preferred not to swim.

Are drinks and snacks included?

No. Drinks and snacks are available from the onboard bar for an additional cost.

What languages are spoken by the host or crew?

The listed languages are English, Greek, Italian, and German.