Kos Town: Glass-Bottom Boat Cruise with Swimming Stops

The best part of this 150-minute Kos boat trip is the combination of sights and swim time. You look through the glass-bottom sections at fish and an old shipwreck, then jump into the remarkably clear water near Pserimos. It feels more like a lively afternoon on the Aegean than a formal sightseeing cruise.

I like the short half-day length, especially if you have young children or want to keep room in your schedule for Kos Town. I also like the friendly crew, onboard bar, music, and easy swimming stop. The main thing to know is that the glass viewing areas can be less impressive when the plastic is scratched or cloudy, and boarding can feel untidy if you arrive late.

Key points to know before you book

• The shipwreck is the glass-bottom highlight: The view becomes much better when the boat reaches the wreck.
• The Blue Lagoon stop is the real star: You get time to swim in clear green-blue water and see fish.
• Two and a half hours is a useful length: You get a sea outing without committing to a full-day cruise.
• Arrive early for a better seat: The undercover glass-bottom area can fill quickly, while outside seats offer more sun and fresh air.
• Families get plenty to do: Children can look for fish, use floating aids, jump from the boat, and enjoy the music.
• Budget for onboard drinks and snacks: The boat trip is included, but the bar costs extra.

The yellow Dorry at Kos port

You meet the boat right at the port in Kos Town. Look for the yellow Dorry Glass Bottom Speedboat, a useful landmark in a busy waterfront area. The meeting point is simple, but boarding may not feel perfectly orderly, particularly when a boat is already filling up.

I would arrive well before departure if you want an outside seat. One passenger arrived about 20 minutes early and still found the boat nearly full, with the remaining seats in the covered area around the glass-bottom viewing section. That space is useful if the sun is strong, but it can feel crowded and may not be the best place if the sea is choppy.

The boat has an upper deck and a shaded area. I like having both choices. Sit outside for the breeze and broad views, then move under cover when the sun becomes too much. If you are prone to seasickness, an outside position with fresh air may feel better, though conditions on the Aegean can change.

The crew speaks English, Greek, Italian, and German. The atmosphere is relaxed rather than formal. You can ask questions, watch the coast, or simply enjoy the ride without being pressed into buying anything.

Setting out between Kos and Pserimos

Once Dorry leaves the port, you get open views across the Aegean and back toward Kos. The boat ride is part of the pleasure here. Sun, wind, and salt air replace the streets and stone ruins of Kos Town for a while.

This is not a quiet sailing boat. Music plays onboard, giving the trip a light party feel. That will suit you if you like a bit of energy on the water. If you want a silent nature trip, this is less ideal.

The bar sells soft drinks, beer, snacks, and cocktails. One account noted freshly made cocktails at around €5, while snacks were considered reasonably priced. The boat accepts card, and there is a toilet onboard. These are small details, but they matter on a two-and-a-half-hour outing, especially with children.

The drink is not part of the $23 ticket, so treat the advertised price as the cost of the cruise itself. Even after adding a drink or snack, the outing offers good value if you want a sea experience without paying for a full-day island excursion.

Two glass-bottom viewing areas and the shipwreck

The boat has two glass-bottom viewing areas. You can look down into the water for fish and other sea life as Dorry moves along. Children often enjoy the simple challenge of spotting creatures below, though the experience is not the same as visiting a large underwater observatory.

The condition of the glass matters. Plastic covers over the viewing panels can be scratched, and some sections may look cloudy at first. This is the main weakness of the cruise. Do not book it expecting perfect, wide-angle underwater viewing from start to finish.

The picture improves when the boat reaches the old shipwreck. The wreck is the most interesting glass-bottom moment because the subject is fixed below you and the boat can pause nearby. On a clear day, you can get a close look through the water, with fish around the wreck. One trip even had a clear enough view to make the stop genuinely striking.

The wreck will not impress everyone equally. One account found it less interesting, while others considered it a major highlight. Your enjoyment will depend on visibility, your seat, and how much you enjoy looking at a submerged object rather than swimming yourself.

Listen when the guide explains the wreck. The commentary adds useful context and gives the viewing stop more purpose. Without it, you might glance down, take a photograph, and move on.

The Blue Lagoon swim near Pserimos

The main reward comes at the swimming stop near Pserimos, often described onboard as the Blue Lagoon. The boat pauses in clear green-blue water, with a sandy beach and fish close to the boat. This is the part I would prioritize if you are deciding what makes the trip worth booking.

You get time to swim, float, snorkel, or simply sit on the boat and watch the water. The stop is not just a quick dip for photographs. Several accounts describe having enough time to enjoy the cove properly, though one person wished the boat had stayed longer.

The water can look exceptionally clear in good weather. You may see fish around the boat and closer to shore. Bring your own snorkel if you have one, since it lets you make more of the stop. Some departures have offered goggles and pool noodles, and floating aids are available for people who are less confident in the water. Still, you should not assume every piece of personal swimming equipment will suit you, so bring what you prefer.

The water is not necessarily warm. One family enjoyed a cold Mythos after swimming, which gives you a fair idea of the classic Greek finish to the stop. If you do not swim, you can remain onboard, watch the activity, or take in the beach and surrounding sea.

The swim stop works well for families because children have several choices. They can swim, look for fish, use floating aids, or stay dry and enjoy the boat. Some children have also been helped to fish when they did not want to enter the water.

Jumping, sliding, and the family factor

Dorry is not only a viewing platform. Depending on how you use the boat, you can jump from the side or use the slide into the sea. This adds a playful edge that many children and older kids enjoy.

You should judge the water and your own comfort before jumping. The crew’s role is to keep the activity safe and welcoming, but you remain responsible for choosing what you can manage. If a child is nervous, there is no need to force the issue. The swim stop is enjoyable from the deck too.

The crew has been particularly helpful with families. One staff member, Manolis, received special praise for helping a child with autism feel comfortable. Another crew member assisted a child after a small incident. These details suggest a team that pays attention when someone needs help, rather than treating the boat as a simple loading-and-unloading operation.

That personal care is valuable on a small water excursion. You are not left to work everything out alone, yet the staff generally allows you to enjoy the activity without constant sales talk or chatter.

Seating, sun, music, and sea conditions

Your choice of seat can shape the whole outing. Outside seats give you better airflow, sun, and views of the Aegean. The covered area protects you from the heat and keeps you near the glass-bottom panels, but it can fill first and feel crowded.

If you want to watch the shipwreck through the glass, consider moving early when the crew signals the viewing stop. A crowded viewing area can make it hard to see, and people may gather around the opening. One passenger found that others stood close while she was seated, making the wreck harder to enjoy.

The music creates a cheerful atmosphere, but it also means this is not a calm, silent cruise. Families and groups looking for an easygoing party mood should be happy. If you are hoping to hear only seabirds and waves, choose your expectations carefully.

Weather affects the ride and the glass viewing. A rainy day did not prevent one outing from being enjoyable, thanks to the crew and the swimming stop, but cloudy or rough conditions can reduce visibility below the boat. On a choppy day, a child became unwell, so families should think about seasickness before choosing a seat.

What the $23 price really gives you

At $23 per person, this is priced as an affordable short sea excursion rather than a full island day. The ticket covers the boat trip. Drinks, snacks, and bar purchases cost extra.

The value comes from packing several activities into 150 minutes:

• A ride along the coast and toward Pserimos
• Views through two glass-bottom sections
• A stop at an old shipwreck
• A proper swimming break in clear water
• Music and an onboard bar
• A toilet for added comfort

You are not paying for a long visit ashore on Pserimos, and there is only one main swimming stop. If you want a full island tour, beach time, and several stops, choose a longer excursion. If you want a compact afternoon with a memorable swim, this price is hard to argue with.

The trip also saves you from giving up an entire day. That makes it useful between sightseeing in Kos Town, a beach visit, or dinner plans. Its length is long enough to feel like a real outing but short enough for children who lose patience on lengthy boat tours.

Who will enjoy Dorry most?

I would recommend this cruise to families, couples, and anyone wanting an easy introduction to the water around Kos. It works especially well if you want swimming, music, snacks, and a friendly crew in one package.

You will probably enjoy it most if you:

• Like swimming in clear natural water
• Want a short cruise rather than a full-day trip
• Are happy with a lively onboard atmosphere
• Enjoy simple sea-life viewing
• Have children who need variety
• Want an inexpensive activity from central Kos

You may want something else if your main goal is serious snorkeling, quiet sailing, or a detailed underwater tour. The glass-bottom sections are a pleasant extra, but the shipwreck and swim stop carry most of the experience.

Non-swimmers can still come along, use floating aids, watch the beach, or enjoy the deck. The crew has also helped children who preferred not to enter the water. Just remember that the cruise is built around a swim stop, so someone who dislikes boats or water may not get much from it.

Practical advice for a smoother trip

Arrive early, especially if you want an outside seat. The boat can fill before departure, and the best positions may go quickly.

Bring a swimsuit, towel, sunscreen, and a snorkel if you have one. A light cover-up is useful for the ride back if you feel cool after swimming. You can buy refreshments onboard, but the ticket does not include them.

If you have young children, explain that the water stop is the main event. The glass-bottom viewing is fun but may be brief or less clear than expected. Pack a small distraction for the ride, even though music and the sea usually keep children occupied.

Check the start time when booking because availability varies. Cancellation is free up to 24 hours before departure, and you can reserve now and pay later. These policies make it easier to fit the cruise around changing Kos plans.

Should you book this Kos glass-bottom cruise?

Book it if you want good-value sea time without losing a full day. The shipwreck gives the cruise a clear sightseeing purpose, but the Blue Lagoon swim is what makes the outing memorable. Add the friendly crew, music, bar, and family-friendly setup, and you have a pleasant way to leave Kos Town for a few hours.

Skip it if you expect flawless underwater viewing or a peaceful sailing trip. Scratched glass, a crowded boarding process, one swimming stop, and occasional choppy water are real considerations. For most people who want a cheerful, affordable boat ride with a beautiful swim, Dorry is a sensible choice.

FAQ

Where does the Kos glass-bottom boat cruise depart?

You meet the yellow Dorry Glass Bottom Speedboat directly at the port in Kos Town.

How long does the cruise last?

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

How much does the cruise cost?

The listed price is $23 per person.

What is included in the ticket?

The ticket includes the boat trip.

Are drinks and snacks included?

No. Drinks, snacks, beer, cocktails, and other bar purchases cost extra.

Does the boat stop for swimming?

Yes. The cruise includes a swimming stop in the clear waters near Pserimos, often called the Blue Lagoon.

How many glass-bottom viewing areas are onboard?

The boat has two glass-bottom viewing areas.

Can you see a shipwreck during the cruise?

Yes. The boat passes an old shipwreck, which you can view from the glass-bottom sections.

What languages are available from the host or greeter?

The host or greeter can speak English, Greek, Italian, and German.

Can you cancel the booking?

Yes. You can cancel up to 24 hours before departure for a full refund. You can also reserve the activity and pay later.