Kos & Pserimos: Glass Bottom Boat & Shipwreck Swim

You'll Float Over a Shipwreck Without Getting Wet (Until You Want To)

You board a fast glass-bottom vessel in Kos Harbour, float across to Pserimos Island for a swimming stop among fish, then position yourself over a submerged shipwreck to watch through the reinforced deck. The boat has two levels: lower with shade and the glass bottom, upper for sun and cocktails. Includes onboard restroom and a crew that keeps groups small enough to move freely.

Step-by-step itinerary

Explore Kos and Pserimos by boat

• View Kos Harbour from sea level
• Swim at Pserimos Island beach
• Observe old shipwreck near Pserimos

The experience

You're standing on a boat with a glass floor, and you're not sure if you should look down or up. The Dory leaves Kos Harbour at sea level, which means you're already closer to the water than you'd expect, and the two-deck setup lets you choose: shaded lower deck with a drink and the glass bottom, or topside in the Greek sun if you're after the tan. The vessel moves fast enough that the crossing to Pserimos doesn't drag, but slow enough that you can actually see what's happening below.

The first real stop is a beach on Pserimos Island where you swim next to fish that don't seem bothered by humans. The water is clear enough that you don't need the glass floor to know what's down there, but that's not the main event. The crew gathers everyone around the thick glass bottom when you reach the shipwreck. An old cargo ship that's been sitting near Pserimos long enough to become part of the seabed. It's the kind of thing you'd normally need a diving certification to see, except here you're standing on top of it, watching through reinforced glass. You might see sea life you've never encountered before. The crew doesn't oversell it, but it happens.

There's a restroom on board, which matters if you're out for several hours, and the boat suits all fitness levels: infants can stay in a stroller, and you don't need to be athletic to stand and look through glass. The crew will photograph you during the trip for their own use, so if that bothers you, mention it before departure. Otherwise, you're just there to float, swim, and see what lives in the Aegean without the gear or the training.

What’s included

Passage on the glass-bottom Dory vessel, viewing of Kos Harbour from sea level, a swimming stop at Pserimos Island beach, access to the glass-bottom deck to view the shipwreck, and use of the onboard restroom. Drinks are available on both decks, though the reference content does not confirm whether they are complimentary or paid.

Before you book

Days and timesNext departure: 17 Oct 2027

Book up to1h before

AgesAdult (13 and older) · Child (4 to 12 years) · Infant (under 4): free

GroupUp to 70

Live guideEnglish

Audio guideEnglish, French, German, Italian, Dutch and Polish

Meeting point and pickupNo hotel pickup: you go to the meeting point. Ends back at the starting point.

Cancellation and refundsFree cancellation up to 24 h before the start. After that, no refund.It may be canceled due to bad weather or if the minimum number of travelers isn't reached. If that happens, you're offered another date or a refund.

Prices and times updated today

Good to know

Easy physical levelStroller friendlyPublic transport nearbyInfants must sit on laps

Operated by Kos Cruise Experts

Is this one for you?Book this if you want to see a shipwreck and marine life without diving certification or getting fully wet: the glass bottom and the swimming stop give you both, and the two-deck layout means you can choose sun or shade depending on the hour.

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Top questions

Can children come?

Yes. Ticket types: Child (4 to 12 years); Infant (under 4): free.

What happens if it rains?

It may be canceled due to bad weather. If that happens, you're offered another date or a refund. Free cancellation up to 24 h before the start.

What will I see through the glass bottom?

Fish, sea life, and an old cargo ship wreck near Pserimos Island. The crew gathers passengers at the glass bottom when you reach the shipwreck.

Is there shade on the boat?

Yes. The Dory has two decks. The lower deck is shaded and has the glass bottom viewing area. The upper deck is open to the sun.

Does the boat stop for swimming?

Yes. There is a swimming stop at Pserimos Island beach where you can swim next to fish.

Is there a restroom on the boat?

Yes, there is a restroom on board.

Will I be photographed during the tour?

The crew may photograph or record you for the company's promotional and marketing use. If you do not wish to be photographed, notify the crew before departure.