From Kos: Pserimos Island Snorkeling Cruise by Diving Boat

The best part of this Kos boat trip is the time spent in Pserimos’s clear blue lagoon, away from the packed party boats. You get a proper safety lesson, a wetsuit, and several hours to swim, snorkel, sunbathe, and watch marine life at your own pace.

I like the small-group feel, with recent departures carrying roughly 15 to 25 people rather than a boat full of hundreds. I also like that the crew takes beginners seriously. Athena and the other instructors explain the gear plainly and help you feel at ease before you enter the water.

The main thing to consider is that this is a mixed snorkeling and scuba boat, not a simple sightseeing cruise. You need to swim, climb a ladder from the sea, and move through a narrow passage on board. Food and drinks are not included, so pack lunch and water.

Key points to know before booking

• Pserimos is the main attraction: You spend the swimming portion in clear water near the quiet island, with time for snorkeling and marine life viewing.
• The group is usually modest in size: Recent trips have had about 15 to 25 people, though the exact number can change.
• The safety briefing is useful for beginners: Expect 20 to 30 minutes of instruction during the cruise from Kos.
• Your equipment is supplied: Wetsuit, mask, snorkel, fins, boat, captain, and basic marine life information are included.
• The sea determines the schedule: Wind force and direction can cancel the trip.
• You need reasonable mobility in the water: Non-swimmers cannot join, and you must climb a ladder to leave the sea.

Leaving Kos Harbour for Pserimos

The boat, Liamis Dive Boat Apollon, leaves from Kos Harbour at about 8:30 in the morning. The meeting point is easy to find, about 50 meters from the Dolphins roundabout, in front of the only traffic lights at the corner of Akti Kountourioti and Meg. Alexandrou.

I would arrive around 8:15. You need to show your ticket and complete a short medical statement before boarding. The boat is 25 meters long, with a shaded deck and a broad sun deck. That gives you a choice between shade, open sun, and a place to sit while enjoying the coast on the way out.

The advertised activity lasts five hours, but the stated departure and return times run from about 8:30 until 2:30. In practical terms, set aside most of the morning and early afternoon. That matters if you have another excursion, a hotel transfer, or a fixed lunch booking later in the day.

The 45-minute crossing to Pserimos is not wasted time. The instructors use it for a safety and equipment briefing lasting about 20 to 30 minutes. You learn how to use the mask, snorkel, and fins, along with basic rules for safe swimming and an introduction to the local marine life.

That instruction is one of the strongest reasons to choose this trip over a basic boat ride. If you are new to snorkeling, you can sort out the gear before reaching the swimming area instead of trying to learn while bobbing about in the sea.

Getting ready with wetsuit, mask, and fins

When you reach the clear waters near Pserimos, the crew fits you with a wetsuit, mask, snorkel, and fins. Full snorkeling equipment is included in the $64 price, so you do not need to bring your own kit.

The wetsuit has a practical benefit beyond warmth. One recent repeat visitor pointed out that it allowed more time in the water. It also gives some buoyancy and can make a new swimmer feel less exposed, although you still need to be comfortable in open water.

The instructors supervise indirectly rather than leading every person by the hand. That means you have freedom to swim and look around at your own speed, but you remain responsible for following the safety advice and staying within your ability.

This arrangement suits confident swimmers and people who want a calm outing rather than a tightly controlled group lesson. It is less suitable if you need constant one-to-one support in the water. The crew offers instruction and guidance, but the trip does not present itself as a fully escorted swim for non-swimmers.

What you find in Pserimos’s private lagoon

The stop near Pserimos is the heart of the day. The water is described as crystal clear, with a blue lagoon setting that gives you good conditions for swimming, snorkeling, and spotting fish.

You are free to choose your pace. Swim for a while, look beneath the surface, sit on the boat, or return to the sun deck. The trip is designed as an unhurried sea day, not a series of rushed shore visits.

The marine life is a clear draw. People have seen plenty of fish and different species close to the boat, and the instructors explain what to look for before you enter the water. I would keep your expectations sensible. This is a natural marine setting, not an aquarium, so the number and variety of fish can change with conditions, visibility, and your own attention.

The island itself is inhabited, but the main stop here is the water rather than a town tour. You should not book this expecting a cultural visit, long walk, or guided exploration on land. The value is in the time spent swimming around the boat and taking in the coast from the sea.

The lack of a packed schedule is part of the appeal. You get more water time because the boat does not spend the day racing between several ports. That makes the trip especially appealing if you have already seen Kos’s beaches and want a different view of the Dodecanese.

A quieter boat day than the party cruises

Kos has plenty of large boat outings, including party boats and pirate-style cruises. This trip offers a different mood. The group size on some departures has been around 15 to 25 people, which leaves more room to move and makes the boat feel less hectic.

I would not treat that number as a promise. The exact passenger count can vary, and the boat also carries people taking part in the more advanced underwater activity. Still, the format is clearly aimed at a smaller, calmer group rather than a floating nightclub.

That matters if you want to hear the safety instructions, find a place on the deck, and enter the water without a long queue. It also helps families and mixed-ability groups. Some people can snorkel while others use the boat as a sunny base, provided everyone can manage the physical demands.

The 25-meter boat offers both shade and sun. Bring a hat and sunscreen, since the open deck can become intense in the Greek summer. Sunglasses are useful during the crossing, and a towel and swimwear belong in your day bag.

What the $64 price really covers

At $64 per person, the cost is reasonable if you want equipment and instruction included. You are paying for the boat, captain, crossing to Pserimos, the safety talk, basic information about marine life, and a complete snorkeling kit.

The price also buys several hours for swimming rather than a quick photo stop. That is the important value here. If you already own equipment and only want a short trip around the coast, you may find a cheaper local option. If you are a beginner who wants a wetsuit, clear instructions, and a boat with a proper sun deck, the package makes more sense.

Food and drinks are not included. Pack a lunch, water, and some cash. The supplied information specifically recommends bringing personal medication, so do not leave necessary medicine back at your hotel.

You also need to supply the things that make a long morning at sea comfortable: sunglasses, sun hat, swimwear, towel, and sunscreen. Alcohol and drugs are not permitted, which fits the calm, safety-focused nature of the outing.

The booking terms are fairly flexible. You can cancel up to 24 hours before departure for a full refund, and you can reserve now and pay later. The provider needs your personal details at least 12 hours before the trip, including your full name, home address, phone number, and passport number for the passenger and insurance lists.

The physical demands are easy to underestimate

This is not a suitable activity for non-swimmers. You must be able to enter and leave the boat, pass through a narrow passage to reach the front deck, and climb a ladder from the sea back onto the boat.

The activity is listed as wheelchair accessible, but the boarding and sea-entry details deserve careful attention. Wheelchair access does not remove the need to manage the narrow passage and ladder if you plan to enter the water. Contact Liamis Dive Boat before booking if you have mobility requirements and need to know exactly what help is available.

You should also be comfortable wearing a mask and snorkel in open water. The crew teaches the basics, but instruction does not replace swimming ability. If you are uncertain, choose a beach-based lesson first or ask the provider for advice.

Wind can also change the plan. The trip may be cancelled because of wind force and direction. That is a sensible safety measure, but it means you should avoid booking this as the only possible activity on your final day in Kos.

Who will enjoy this Pserimos trip most

I would recommend it to confident swimmers, first-time snorkelers, couples, families with capable older children, and small groups of friends. The instructors make the gear less intimidating, while the open schedule lets stronger swimmers and casual swimmers enjoy the day differently.

It is also a good fit if you dislike noisy, crowded boat excursions. The smaller feel and limited travel time leave more of the day for the sea. You can expect a friendly atmosphere, clear explanations, and a crew that pays attention to basic safety.

You may want another option if your main interest is sightseeing on Pserimos. There is no detailed land itinerary here. You may also be disappointed if you expect a private charter, since the boat carries a mixed group taking part in more than one underwater activity.

The trip is especially useful for beginners because the crew explains how to fit and use the equipment. Still, you should not confuse beginner-friendly with effortless. You remain in open water, and you need to climb the ladder without assistance being guaranteed.

Practical details for a smooth morning

Arrive at the harbour early enough to find the meeting point and complete the medical statement without rushing. Bring your ticket, and keep your passport details available when booking so the provider can add you to the passenger and insurance lists.

Wear swimwear under comfortable clothing. Pack your lunch and drinks in a small bag, along with a towel, sunscreen, sunglasses, a hat, cash, and personal medication.

During the crossing, listen closely to the safety briefing. Pay attention to how the mask seals, how to clear the snorkel, and where the instructors want you to swim. Those small lessons can make the difference between relaxing in the water and spending the first half-hour adjusting equipment.

Use the shaded deck if you need a break from the sun. The open sun deck is tempting, but several hours on a bright Greek sea can catch you out, especially with wind making the temperature feel pleasant.

Should you book the Kos to Pserimos cruise?

Book this trip if you want a calm half-day on clear water, proper basic instruction, included gear, and more swimming time than a typical sightseeing cruise. The crew, including Athena on some departures, has earned strong praise for being friendly and clear with beginners, while the small-group feel gives the outing a more personal character.

Think twice if you cannot swim, dislike ladders, need a fully guided swim at all times, or want a land-based visit to Pserimos. Weather can also disrupt the plan, so keep a little flexibility in your Kos schedule.

For $64, this is good value for a well-equipped sea outing, especially if you would otherwise need to rent gear and arrange transport separately. Pack lunch, arrive early, and book it for a day when you are ready to spend most of your morning in the water.

FAQ

Where does the Pserimos snorkeling cruise leave from?

The boat leaves from Kos Harbour, about 50 meters from the Dolphins roundabout, at the front of the only traffic lights, where Akti Kountourioti meets Meg. Alexandrou.

What time should I arrive?

Arrival is expected at approximately 8:15 to 8:30 in the morning. The boat departs at around 8:30.

How long does the trip take?

The activity is listed as five hours. The stated schedule has departure around 8:30 and return around 2:30, so you should allow roughly six hours from departure time to return.

What equipment is included?

A wetsuit, mask, snorkel, and fins are included, along with the boat, captain, snorkeling information, safety instruction, and basic information about marine life.

Is food included?

No. Food and drinks are not included. Bring a packed lunch and water.

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 leave the sea and move through a narrow passage on the boat.

What languages do the instructors speak?

The instructors provide the activity in English and Greek.

Can the boat trip be cancelled?

Yes. The trip may be cancelled because of the force and direction of the wind.

Is cancellation available if my plans change?

You can cancel up to 24 hours in advance for a full refund. You can also reserve now and pay later.