From Kos: Pserimos Island Snorkeling Cruise by Diving Boat

Pserimos gives you the best part of a boat day without the party-boat fuss. The 25-meter Liamis boat carries a mixed group of snorkelers and scuba participants to a clear blue lagoon, where you can swim, sunbathe, and watch fish at your own pace. Athena and the crew have earned warm praise for friendly instruction and calm handling.

I especially like the small-group feel, with groups often around 15 to 25 people, and the wetsuits, which let you stay in the water longer. The main thing to consider is that this is not suitable for non-swimmers. You must also manage a narrow passage, step on and off the boat, and climb a ladder after your swim.

Key points to know before you book

• A quieter boat day: This is a mixed snorkeling and scuba outing, not a crowded party cruise.
• Useful instruction first: Expect a 20 to 30-minute lesson on equipment, safety, and local marine life.
• A long swim stop: Most of your time at Pserimos is set aside for swimming, sunbathing, and underwater exploring.
• Wetsuits are supplied: You receive a wetsuit, mask, snorkel, and fins at the lagoon.
• Bring your own food: Lunch, drinks, sunscreen, a towel, and personal medication are not included.
• Weather matters: Wind force and direction can cancel the boat trip.

From Kos Harbour to Pserimos by boat

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 boat at the front of the only traffic lights in that spot. You need to show your ticket when you arrive.

Plan to be there around 8:15 to 8:30 a.m. Before departure, you complete a short medical statement. The boat leaves at about 8:30 a.m. and returns around 2:30 p.m., giving you roughly five hours on the full outing.

The ride to Pserimos takes around 45 minutes. That is long enough to enjoy the coast and settle into the day, but not so long that the transfer eats up the main activity. I would use this time to apply sunscreen, find a place in the shade or on the sun deck, and listen closely to the crew’s instructions.

The 25-meter boat has a shaded deck and a spacious upper sun deck. That gives you a choice that matters in the Greek sun. You can sit under cover during the cruise, then move upstairs when you want more sun and open views. The boat is built for water activities, so this is a practical trip rather than a polished luxury cruise.

A proper safety lesson before you enter the water

The crew uses the trip to Pserimos for a detailed briefing lasting about 20 to 30 minutes. You learn how to use the mask, snorkel, and fins, along with basic safety rules and information about the local marine life.

That lesson is useful even if you have snorkeled before. A mask that leaks or a snorkel used poorly can spoil the first few minutes in the water. The crew explains the gear before you reach the lagoon, so you are not trying to learn everything while floating around.

The instruction also helps families and first-time snorkelers. Several people have praised the clear explanations and friendly support, including beginners who felt well looked after. Athena is specifically mentioned as part of the crew, and the wider team receives consistent praise for being patient, approachable, and good at explaining what to watch for.

You remain under the indirect supervision of the instructors. That wording matters. This is not a guided swim where an instructor leads every person by the hand or keeps the group in a tight line. You are expected to manage your own swimming and stay aware of your ability, the boat, and the water around you.

Pserimos blue lagoon: swimming, fish, and free time

The main stop is a private blue lagoon near Pserimos Town. Once the boat reaches the clear water, the crew fits you with a wetsuit, mask, snorkel, and fins. You then have time to choose how you want to use the stop.

You can swim, float with your mask in the water, look for fish, or stay on deck and sunbathe. The trip does not force you through a packed schedule of short stops. That slower pace is one of its strongest points. You get a substantial stretch of time in one attractive place instead of spending the day climbing on and off boats.

The water is described as turquoise and crystal clear, with plenty of fish visible around the swimming area. The crew gives you an idea of the marine life to look for, which adds purpose to the snorkel. Instead of simply swimming laps, you have a better chance of noticing small movements, different fish, and life near the rocks or seabed.

I would keep your expectations sensible. This is a recreational snorkel in the open sea, not a guaranteed wildlife show. Marine life and visibility can vary with weather and water conditions. Still, the repeated reports of many fish and clear water make this a strong choice if you want a straightforward introduction to the underwater side of Kos.

The wetsuit is another practical plus. It provides warmth and can make a longer swim more comfortable, especially if you tend to feel cold after several minutes in the sea. It also gives some extra comfort while you are learning to use the equipment. The crew supplies the full set, so you do not need to bring your own mask or fins.

Why the smaller group changes the experience

Boat trips from Kos can range from calm outdoor excursions to loud, crowded outings aimed at entertainment. This one leans toward the calmer end. The group size has often been around 15 to 25 people, which is small enough to avoid the feeling of being packed onto a floating platform.

That does not mean you have the lagoon to yourself. You are still sharing the boat and swimming area with other people, including those taking part in the scuba side of the trip. But the smaller scale makes it easier to find a place on deck, hear the crew, and enter the water without a crush of people.

I like that the mixed abilities are treated as normal. Strong swimmers, beginners, snorkelers, and scuba participants can all use the same boat day without the outing turning into a race. You can spend your time in the water while others choose a different activity.

The trade-off is that this is not a private charter. The schedule, safety rules, and return time are shared with the group. If you want complete control over where you stop or how long you stay, a private boat would suit you better. At $64 per person, though, this trip offers a more accessible way to reach Pserimos without paying for an exclusive boat.

What the $64 price includes

At $64 per person, the price covers the boat, captain, snorkeling equipment, and the basic lesson about safe snorkeling and marine life. You also receive the wetsuit, mask, snorkel, and fins used at Pserimos.

That is fair value if you need the equipment. Buying or packing your own gear is not necessary, and the boat transfer is the main practical cost of reaching the lagoon. The five-hour length also gives you enough time for the boat ride, instruction, and a substantial period in the sea.

Food and drinks are not included. Bring a packed lunch and water, along with some cash. This is an easy detail to overlook because the trip lasts through the middle of the day. You will be happier with your own food on board than with an empty stomach after a long swim.

You should also bring sunglasses, a sun hat, swimwear, a towel, sunscreen, and any personal medication. Alcohol and drugs are not allowed. Apply sunscreen before boarding and keep reapplying it, especially if you spend time on the upper deck.

Getting on and off the boat

The activity is listed as wheelchair accessible, but you should check the physical requirements carefully before booking. You must be able to step on and off the boat, pass through a narrow walkway to reach the front deck, and climb a ladder to leave the sea.

Those requirements may affect people with limited mobility, even though the activity has an accessibility designation. Contact the provider before booking if you need assistance or have questions about the boat layout.

You also need to be a swimmer. The crew offers instruction, but the trip does not turn a non-swimmer into a confident swimmer in one morning. You should be comfortable entering open water and getting back to the boat by ladder.

For families, the outing can work well for children who already swim and can follow water instructions. The crew’s explanation of how to use the snorkel is particularly useful for younger participants. Parents should still judge their children’s swimming ability honestly, since supervision is indirect rather than one-to-one.

The return to Kos

After your time at Pserimos, you return to the boat, dry off, and settle into the ride back to Kos. The boat is scheduled to arrive at Liamis Harbour around 2:30 p.m., so you still have part of the afternoon available.

That timing makes the trip easy to combine with an evening meal or a relaxed walk around Kos Town. It also means you should not expect a full-day island visit. The focus is the lagoon, the boat ride, and time in the sea, not a long visit to Pserimos Town or a broad tour of the island.

The cruise back gives you another chance to use the shaded deck or sun deck. If you have spent a few hours in the water, shade and a seat will probably be more valuable than more sun. Bring dry clothing if you dislike sitting in damp swimwear on the return journey.

The weather remains the one major uncertainty. Strong or poorly directed winds can cancel the trip. That is a normal concern for a small-island boat excursion, but it is worth keeping in mind when planning your holiday. If this is a highlight of your Kos stay, avoid placing it on your final possible day.

Who should book this Pserimos trip?

I would choose this outing if you want a calm half-day at sea, clear water, and a real chance to look for fish without joining a crowded party boat. It suits confident swimmers, families with water-ready children, couples, and friends who prefer free time over constant organized activity.

It is especially good for beginners who want a proper equipment lesson before entering the water. The crew’s clear explanations and relaxed manner make the first few minutes less awkward. You can learn the basics, then practice at your own speed.

I would think twice if you do not swim, dislike boat transfers, or want a fully guided underwater route. The instructors are present and helpful, but you are not being led around every part of the lagoon. You need to be comfortable making your own choices in the water.

I would also skip it if your ideal boat trip includes meals, music, multiple sightseeing stops, or a structured island tour. This is simpler: cruise out, learn the basics, spend a long time in the water, and come back.

Should you book it?

Book this Pserimos trip if clear instruction, a manageable group, and generous swim time matter more to you than onboard entertainment. The $64 price is reasonable because it includes transport, a full equipment set, a wetsuit, and a five-hour outing.

Before paying, confirm that you can handle the boat ladder and open-water swimming. Pack lunch, drinks, sun protection, and a towel, and keep a backup day available in case wind cancels the trip. For the right swimmer, this is a relaxed and good-value way to see a quieter side of the Dodecanese.

FAQ

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. It is at the front of the only traffic lights in that area.

What time does the trip start and finish?

You should arrive at about 8:15 to 8:30 a.m. The boat departs around 8:30 a.m. and returns to Kos at approximately 2:30 p.m. The stated duration is five hours.

What equipment is provided?

The trip includes a wetsuit, mask, snorkel, fins, and other full snorkeling equipment. The price also includes the boat, captain, and the basic safety and marine-life briefing.

Do I need to bring food and drinks?

Yes. Food and drinks are not included, so bring a packed lunch and your own drinks. You should also bring cash, a towel, swimwear, sunscreen, sunglasses, a sun hat, and personal medication.

Can non-swimmers join?

No. The activity is not suitable for non-swimmers. You must also be able to step on and off the boat, pass through a narrow passageway, and climb a ladder to leave the water.

Can the trip be cancelled because of weather?

Yes. The boat trip may be cancelled because of the force and direction of the wind. You can cancel your booking up to 24 hours before departure for a full refund.