From Kos: Pserimos Island Snorkeling Cruise by Diving Boat

Pserimos gives you the best part of a Greek island boat day: clear water, a quiet blue lagoon, and several hours to swim and snorkel instead of rushing between stops. The 25-meter Liamis boat has shade below and a broad sun deck, while instructors explain equipment use and the local marine life before you enter the water.

I especially like the small-group feel, with recent trips carrying roughly 15 to 25 people rather than a full party boat. I also like the wetsuits and patient instruction, which make the water time more comfortable for beginners and children. The main thing to consider is that you must be a swimmer and climb a ladder from the sea back onto the boat.

Key points at a glance

• A blue lagoon near Pserimos: Spend several hours swimming, snorkeling, and looking for fish in clear water.
• A 25-meter boat with room to spread out: Use the shaded deck or spacious sun deck during the 45-minute ride.
• Useful beginner instruction: The crew explains safe snorkeling, gear use, and what marine life you may see.
• A calmer alternative to party boats: Recent trips have often had around 15 to 25 tourists.
• A mixed-ability outing: Snorkelers and underwater participants share the boat, with instructors providing indirect supervision.
• Bring your own lunch: Food and drinks are not included, and there are no hotel transfers.

Leaving Kos Harbour for Pserimos

Your morning begins at the Liamis boat in Kos Harbour, about 50 meters from the Dolphins roundabout, at the corner of Akti Kountourioti and Meg. Alexandrou. Look for the location near the only traffic lights in that area. You need to show your ticket, so keep it easy to reach.

The stated departure is around 8:30 a.m., with arrival at the boat between 8:15 and 8:30. This is not a trip where you should stroll up at the last moment. You will complete a short medical statement before boarding, and the crew needs your details in advance for the passenger and insurance lists.

The boat itself helps shape the day. Liamis is 25 meters long, with a covered deck and a large open sun deck. You can sit in shade during the ride or stretch out in the sun once the boat is under way. For a sea trip, that choice matters. A full day in direct sun can wear you down before you even reach the swimming stop.

The crossing to Pserimos takes about 45 minutes. It is long enough for coastal views and a proper briefing, but not so long that the boat ride takes over the outing. Instructors spend about 20 to 30 minutes explaining the mask, snorkel, fins, and basic safety rules. They also talk about local marine life, giving you something specific to look for once you enter the water.

I like this early briefing because it gives first-timers a chance to sort out simple problems before reaching the lagoon. You can learn how to position the mask, use the snorkel, and move with fins without trying to work it all out alone in open water. The staff speak English and Greek, and recent feedback gives particular credit to Athena and the crew for clear, friendly help.

The Pserimos blue lagoon stop

The main stop is in the clear water near Pserimos Town. The trip describes this as a private blue lagoon, giving you a more peaceful setting than the busy swimming areas used by large excursion boats. The appeal is simple: you get off the boat, put on your equipment, and choose how to use your time.

You can swim, snorkel, sunbathe, or simply sit on board and enjoy the view. The schedule allows several hours around the island, so you are not limited to one quick swim before being called back. This slower pace is one of the strongest reasons to choose the trip.

The crew provides a wetsuit, mask, snorkel, and fins. The suit is useful for more than warmth. It can help you stay in the water longer and gives some protection from sun and minor scrapes. The water may feel comfortable at the surface, but several hours swimming can still leave you cold, especially outside the hottest summer weeks.

You explore under the indirect supervision of the instructors. That wording matters. This is not a private guide holding your hand through every minute in the water, and it is not a substitute for strong swimming ability. You receive instruction and support, but you still need to manage yourself in the water and follow the crew’s directions.

The marine life is a key part of the stop. The crew explains what you may see, and past trips have produced plenty of fish and several different species. Conditions, visibility, and the movement of the animals can change from day to day, so you should not expect a guaranteed list of creatures. The setting is best understood as a chance to watch sea life in its natural surroundings, not a staged display.

What the mixed group means for your day

This is a mixed snorkeling and underwater activity on a boat designed for both. That arrangement suits families and groups with different interests. One person can snorkel near the surface while another takes part in the more advanced side of the outing, with everyone sharing the same boat and swimming area.

For a snorkeling-only visitor, the mixed format has both good and less useful sides. The good part is that the crew is used to different ability levels, and the snorkeling instruction remains part of the plan. The less useful part is that not every minute of the boat’s operation is focused only on snorkeling.

Recent trips have often had around 15 to 25 people. That is small enough to feel relaxed compared with crowded party boats or pirate-style excursions, but it is not a private charter. You will share the deck, equipment process, and water stop with other people.

I would choose this trip if you want a social but calm boat day. You get enough company for a lively outing, without the packed feeling that can make a swimming stop awkward. If you want a completely private guide, a silent boat, or a highly structured lesson, this is not the right format.

Sun, shade, and the practical rhythm of the boat

The boat’s layout lets you adjust your day. Use the shaded deck during the crossing or when you need a break from the sun. The open upper deck is better for drying off, looking at the coast, and enjoying the ride back to Kos.

You should bring sunglasses, a hat, swimwear, a towel, and strong sunscreen. Pack lunch and water because food and drinks are not included. Cash is also listed as useful, and you should bring any personal medication you may need during the outing.

A packed lunch is especially important because the trip gives you time at the lagoon rather than a planned restaurant meal. Keep your food simple and secure. You will be moving between the boat and the water, and you do not want a loose bag or open container sliding across the deck.

Alcohol and drugs are not allowed. That is sensible on a boat where people are swimming, using fins, and climbing a ladder. Stay alert, listen to the instructors, and treat the safety briefing as part of the experience rather than an interruption.

The timetable deserves a small note. The advertised duration is five hours, while the stated schedule runs from about 8:30 a.m. until around 2:30 p.m. That is closer to six hours from departure to return. Times at sea can shift, particularly if wind affects the route, so keep the rest of your day flexible.

Getting in and out of the water

You need to be able to step on and off the boat, move through a narrow passageway to reach the front deck, and climb a ladder to get out of the sea. These are not minor details. If you are unsteady on ladders, have limited mobility, or are unsure about your swimming ability, ask the provider for a clear explanation before booking.

The activity is marked as wheelchair accessible, but the water access requirements still apply. A wheelchair-accessible boat listing does not remove the need to reach the swimming area or climb back aboard from the water. Contact Liamis before committing if you need assistance or have mobility concerns.

Non-swimmers should not book this outing. The instructors give safety guidance and offer indirect supervision, but this is a water activity rather than a sightseeing cruise with an optional paddle. You should be comfortable in the sea and able to follow instructions.

For confident swimmers, the format is pleasantly free. You can spend more time floating and watching fish, take a sun break, or return to the water when ready. That freedom is a better fit for people who dislike being hurried from one activity to the next.

Is $64 good value?

At $64 per person, the price is fair for a five-hour sea outing that includes the boat, captain, snorkeling briefing, and full equipment. You are not paying only for transport to Pserimos. The cost also covers the crew, the safety explanation, wetsuit, mask, snorkel, fins, and a long stop in the water.

The value improves if you need to rent equipment elsewhere. Buying or arranging a mask, snorkel, fins, and wetsuit separately could add cost and effort, while the boat gives you everything in one place. The included instruction is also useful for beginners who would otherwise spend part of the morning learning by trial and error.

The price is less attractive if you want food, hotel pickup, or a private group. None of those are included. You will need to reach Kos Harbour yourself and carry your own lunch and drinks.

I see this as good value for someone who wants real swimming time and a smaller boat atmosphere. It is not the cheapest possible way to reach another island, but it offers more than a simple transfer and avoids the crowded party-boat style that many people are trying to escape.

Who will enjoy the Pserimos trip most

This outing suits:

• Confident swimmers who want several hours in the water
• First-time snorkelers who appreciate a proper equipment briefing
• Families with older children who can use the gear and climb the boat ladder
• Couples and friends who want a relaxed half-day at sea
• Groups with mixed interests in snorkeling and underwater activities
• Anyone who prefers a smaller group to a packed excursion boat

You should think twice if you dislike open water, cannot climb a ladder, or want a fully guided experience from start to finish. You should also skip it if your ideal island day includes a beach café, a long walk through town, or a formal sightseeing program. Pserimos is mainly about the sea.

The weather is another consideration. Wind force and direction can cancel the boat trip. That is a normal part of island travel, not a sign that the operator has planned poorly. Keep some flexibility in your Kos schedule, especially if this is the one activity you most want to do.

Booking, cancellation, and the meeting point

You can cancel up to 24 hours ahead for a full refund, and the reserve-now, pay-later option keeps your plans flexible. The provider needs your full name, home address, phone number, and passport number at least 12 hours before the trip so you can be placed on the passenger and insurance lists.

Reach the harbor meeting point on your own. Hotel pickup and drop-off are not included. Since the boat is close to the Dolphins roundabout and the harbor traffic lights, allow enough time to find the exact corner, show your ticket, complete the medical statement, and board without rushing.

Bring your ticket and personal medication. Wear swimwear under your clothes if you prefer a quick change, and pack a towel and sun protection where you can reach them easily. The crew will provide the water equipment, so your main job is to arrive prepared for a morning at sea.

Should you book this Kos snorkeling cruise?

I would book it if you want clear water, a relaxed boat, and plenty of time to swim around Pserimos. The strongest features are the 45-minute crossing, the useful safety lesson, the wetsuit and complete equipment, and the smaller group feel. Athena and the crew have earned warm praise for being friendly and clear, which matters when you are handing your first mask and fins.

I would not choose it for a non-swimmer, someone needing step-free sea access, or anyone expecting a private, fully guided snorkeling lesson. You also need to supply lunch, drinks, and transport to the harbor.

For a confident swimmer who wants a peaceful alternative to a crowded Kos party boat, $64 is a sensible price. Pack lunch, protect yourself from the sun, and leave room in your schedule for weather changes. You will get the most from this trip by treating Pserimos as a water day, not as a checklist of island sights.

FAQ

How long is the Pserimos snorkeling cruise?

The activity is advertised as five hours. The stated schedule has departure around 8:30 a.m. and return around 2:30 p.m., so you should allow roughly six hours from the boat departure to the return, with times subject to change.

Where does the boat leave from?

The boat leaves from Kos Harbour, about 50 meters from the Dolphins roundabout, at the corner of Akti Kountourioti and Meg. Alexandrou, near the only traffic lights in that area.

What equipment is included?

A wetsuit, mask, snorkel, and fins are included, along with the boat, captain, snorkeling information, and a safety briefing.

Is food included?

No. Food and drinks are not included, so bring a packed lunch and anything you need to drink during the trip.

Do I need to be able to swim?

Yes. The activity is not suitable for non-swimmers. You must also be able to climb a ladder to get out of the sea.

Is the trip suitable for wheelchair users?

The activity is listed as wheelchair accessible, but you still need to step on and off the boat, use a narrow passageway to reach the front deck, and climb a ladder from the water. Contact the provider to discuss your specific needs.

What languages do the instructors speak?

The instructors speak English and Greek.

Can the boat trip be cancelled?

Yes. The trip may be cancelled because of wind force and direction. You can also cancel your booking up to 24 hours in advance for a full refund.