From Kos: Pserimos Island Snorkeling Cruise by Diving Boat

Pserimos gives you the best part of a sea day without the noisy party-boat feel. You cruise from Kos to a clear blue lagoon, then spend several hours swimming, snorkeling, or simply lying on the sun deck while the crew keeps an eye on the water. The boat usually carries only about 15 to 25 people, a comfortable size for a half-day out.

I like the clear instruction for beginners and the fact that wetsuits are supplied, so you can stay in the water longer. I also like the choice of pace: you can look for fish, swim with your family, or stay dry on the shaded deck. The main catch is that this is not suitable for non-swimmers, and the boat trip can be cancelled if wind conditions are poor.

Key points at a glance

• A quiet Pserimos lagoon: Spend several hours in clear water away from the larger party boats.
• Small-group feel: The boat commonly carries around 15 to 25 people, rather than a packed crowd.
• Useful beginner briefing: The crew explains safe snorkeling, equipment use, and the local marine life before you enter the sea.
• Full equipment supplied: You receive a wetsuit, mask, snorkel, and fins.
• A proper half-day schedule: Meet at about 8:15 to 8:30 a.m. and return to Kos around 2:30 p.m.
• Bring your own food: Lunch and drinks are not included, and the boat does not provide hotel transfers.

Leaving Kos Harbour for Pserimos

Your morning begins at Liamis Dive Centre’s boat in Kos Harbour, about 50 meters from the Dolphins roundabout, at the corner of Akti Kountourioti and Meg. Alexandrou. Look for the boat near the only traffic lights and have your ticket ready.

The boat is the 25-meter Liamis Dive Boat Apollon. It has a shaded deck and a broad sun deck, so you can choose between shelter and full sun during the crossing. The departure time is around 8:30 a.m., with check-in at approximately 8:15 to 8:30. Arriving early matters because you need to complete a short medical statement and be added to the passenger and insurance list.

The crossing to Pserimos takes about 45 minutes. That is enough time to watch Kos recede, settle into a seat, and listen to the crew’s briefing without rushing. This is not just a quick equipment handout. The safety talk takes roughly 20 to 30 minutes and covers how to use the mask, snorkel, and fins, along with basic information about the local sea life.

I appreciate that structure. Snorkeling looks easy, but a badly fitted mask or awkward breathing through a snorkel can spoil the whole morning. The crew’s instructions give first-timers a chance to get comfortable before reaching the lagoon. English and Greek are spoken.

Athena is named among the crew members praised for being clear, friendly, and helpful. The wider team also receives strong marks for keeping beginners at ease and explaining what to watch for in the water. You should still remember that this is a mixed snorkeling and scuba outing on a working boat, not a private family charter built only around shallow-water swimming.

The Apollon gives you room to choose your seat

A 25-meter boat is considerably more comfortable than a small rigid inflatable for a trip of this length. The shaded deck helps when the Mediterranean sun becomes intense, while the open upper deck gives you space to stretch out and dry off.

The boat setup also suits different members of one group. Strong swimmers can spend more time in the sea. Children who tire quickly can return to the boat. Anyone who prefers a slower morning can enjoy the coastal views from the deck and enter the water only when ready.

There is a practical limit, though. You must be able to step on and off the boat, move through a narrow passage to reach the front deck, and climb a ladder to leave the water. The activity is described as wheelchair accessible, but these physical requirements are important. Check your own mobility needs with the operator before booking.

The crew provides indirect supervision rather than one-to-one in-water guidance. That means you receive instruction and support, but you are responsible for managing yourself in the sea. Non-swimmers should not book this trip.

Arriving at Pserimos Town and its blue lagoon

After the short crossing, the boat reaches the waters near Pserimos Town. The island is far quieter than Kos, and the appeal here is simple: clear water, open sea, and a few hours with no complicated schedule.

The main stop is described as a private blue lagoon. You are fitted with a wetsuit, mask, snorkel, and fins, then free to explore at your own pace. The water is used for several activities at once, including swimming, snorkeling, and scuba, so you should follow the crew’s instructions and remain aware of the space around you.

The lagoon’s clear water makes it easier to spot fish and other marine life. The exact species and visibility will change with weather and sea conditions, so you should not expect a guaranteed wildlife show. Still, the experience gives you a chance to observe sea life in the wild rather than inside an aquarium.

The crew explains what to look for before you enter. That small piece of context makes the outing more rewarding. Instead of simply swimming over the bottom, you have some idea of where to direct your attention. Several people who took the trip reported seeing plenty of fish and different kinds of marine life.

Several hours to swim, snorkel, or do very little

The biggest strength of this trip is the length of the stop. Much of the five-hour outing is spent at Pserimos rather than on the boat. The journey there takes around 45 minutes, leaving a substantial block of time for the sea and sun before the return to Kos.

You can treat the stop as an active snorkeling session, but you do not have to. Swim for a while, climb back aboard, dry off on the sun deck, and return to the water when you feel like it. That freedom is useful for families and mixed-ability groups, since not everyone wants to spend the same amount of time wearing fins.

The wetsuit is more than a nice extra. It helps you stay comfortable during a longer period in the water, especially if you tend to cool down after repeated swims. The supplied mask, snorkel, and fins also save you from packing or hiring your own set.

I like that the morning is not built around a loud timetable or a string of rushed stops. You are not constantly gathering for another departure. The tradeoff is that anyone seeking several different islands or a more varied sightseeing route may find the day focused on one location.

What you may see beneath the surface

The crew provides a short introduction to local marine life, then you have time to look for fish in the lagoon. The reports from this activity repeatedly point to good sightings, including plenty of fish and several different types of marine life.

Keep your expectations sensible. Snorkeling conditions depend on wind, water clarity, and where the boat is anchored. The description does not promise a particular species, coral formation, or underwater landmark. What you do get is an accessible way to spend time in clear Greek water with basic guidance and proper equipment.

For beginners, the instruction may be the most valuable part. The crew explains how to use the snorkel correctly and what to do for safe snorkeling. That can make a real difference for children and adults who have tried snorkeling before but never felt comfortable with it.

More experienced swimmers may appreciate the independence. You are not required to stay in a tight group or follow a guide through every minute of the session. Just remember that the supervision is indirect, so you need to judge your own ability, stay alert, and return to the boat when instructed.

A smaller boat without the party atmosphere

A number of people choose this excursion specifically to avoid crowded party boats and pirate-style cruises. The usual group size of about 15 to 25 people gives the outing a calmer feel and makes it easier to hear the crew’s briefing.

That does not mean you are booking a private cruise. Other people will be snorkeling, swimming, and using the boat at the same time. It is simply a more restrained setup than a large excursion vessel filled with music and sunbed competition.

The smaller group also helps when you need equipment or have a question. The crew can give more direct attention than they could on a boat carrying a much larger crowd. The strongest praise goes to the staff’s friendliness, clear explanations, and ability to make beginners feel safe.

The boat is a mixed snorkeling and scuba operation. You may see people preparing for scuba activities while you use the lagoon for surface swimming. That arrangement works well if your group includes different interests, but it is worth knowing before you book. This is not a snorkeling-only boat designed around a guided route for every participant.

The price: sensible for equipment and time

At $64 per person, the trip offers reasonable value if you want a half-day on the water with transport from Kos, a crew, and a complete snorkeling kit. The price includes the boat, captain, snorkeling information, and a wetsuit, mask, snorkel, and fins.

The value improves because the schedule gives you several hours at Pserimos. You are paying for more than a short swim stop. The boat carries you to the island, gives you instruction, supplies the equipment, and provides a comfortable base while you use the lagoon.

Food, drinks, hotel pickup, and hotel drop-off are not included. Bring a packed lunch, water or other non-alcoholic drinks, cash, and any personal medication you need. Alcohol and drugs are not allowed.

You should also budget for the time and effort of getting to Kos Harbour yourself. The meeting point is central and clearly described, but this is not a hotel-to-hotel excursion. If you prefer every detail handled from your accommodation, a tour with transfers may be worth the extra cost.

Flexible booking helps if your plans are not fixed. You can reserve now and pay later, and cancellation is free up to 24 hours before departure. The operator requires 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.

Wind can change the plan

The Aegean is not always calm, and the operator may cancel the boat trip because of wind force and direction. That is frustrating if this is the one sea excursion you planned, but it is also a sensible safety measure.

Keep a little flexibility in your Kos schedule instead of placing this trip on the final morning of your holiday. You will be better positioned to move it if weather affects the departure.

The same conditions can affect how much you see underwater. Clear water is one of the main attractions, but visibility and comfort may vary. Bring a sun hat, sunglasses, swimsuit, towel, and sunscreen, and remember that the sun deck offers little shade by design.

Who will enjoy this Pserimos outing most

This trip fits swimmers who want a relaxed sea day and do not need constant guiding. It is especially suitable for:

• Families with children who can swim and need a flexible pace
• Friends with mixed interest in swimming, snorkeling, and scuba
• Beginners who want equipment instruction before entering the water
• Couples looking for a quieter alternative to a party cruise
• Anyone who values several hours at one good swimming spot over many short stops

It is not suitable for non-swimmers. You also need enough mobility to use the boat’s passageway and ladder. If you dislike open-water swimming, want a fully guided underwater route, or need hotel pickup, this may not be the right choice.

For families, the wetsuits and patient explanations are useful advantages. Parents should still keep close track of children in the sea because supervision is indirect. For confident swimmers, the freedom to choose when to enter and leave the water is a major plus.

What to pack for a smoother morning

Pack lightly, but bring the items that make a sea day easier:

• Swimsuit and towel
• Sunglasses and a sun hat
• Plenty of sunscreen
• Packed lunch and drinks
• Cash
• Personal medication

The operator supplies the snorkeling equipment and wetsuit, so you do not need to bring your own mask or fins. You must show your ticket at the meeting point.

Wear sun protection even if you plan to spend most of the time in the water. The trip includes a crossing, time on the open deck, and repeated movement between the boat and sea. A towel and dry clothes will make the return journey more comfortable.

Should you book the Liamis Pserimos cruise?

I would book this if you want a calm, well-organized half-day at sea rather than a loud sightseeing cruise. The strongest reasons are the small group size, the long stop at Pserimos, the full equipment, and the crew’s clear help for beginners. Athena and the rest of the team have earned praise for being friendly and reassuring, which matters when you are learning to breathe through a snorkel.

I would pause if you are a non-swimmer, need close personal supervision, or want lunch and hotel transport included. Also leave room in your schedule for a weather change.

For a swimmer who wants clear water, fish, sun, and a quiet boat without paying for a full-day cruise, $64 is a fair price. Bring your own food, arrive ready for a ladder and a little effort, and you can spend the morning exploring Pserimos at your own pace.

FAQ

Where does the Pserimos snorkeling cruise depart from?

It departs from Liamis Dive Centre’s boat in Kos Harbour, about 50 meters from the Dolphins roundabout, at the corner of Akti Kountourioti and Meg. Alexandrou. The boat is near the only traffic lights. Have your ticket ready.

What time does the boat leave and return?

You should arrive at approximately 8:15 to 8:30 a.m. The boat leaves around 8:30 a.m. and returns to Kos at about 2:30 p.m. The full activity lasts roughly five hours.

Is snorkeling equipment included?

Yes. The activity includes a wetsuit, mask, snorkel, and fins, along with a safety and equipment briefing.

Is the cruise suitable for non-swimmers?

No. Non-swimmers should not book this activity. You must also be able to step on and off the boat, move through a narrow passageway, and climb a ladder to leave the sea.

Are food, drinks, and hotel transfers included?

No. Food, drinks, hotel pickup, and hotel drop-off are not included. Bring a packed lunch, drinks, cash, and any personal medication you need.

Can the trip be cancelled because of weather?

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