From Kos: Pserimos Island Snorkeling Cruise by Diving Boat

Salt air, then straight into turquoise water.

This cruise from Kos to Pserimos Island is a simple way to get snorkeling time in clear water, plus a proper safety briefing before you hit the lagoon. I like that you get fitted with full gear right after a short briefing, and you do not feel rushed when it is time to swim, snorkel, and sunbathe. The only real catch is that it is not suitable for non-swimmers, and you will need to step on and off the boat and climb a ladder.

You start early from Kos Harbour and head to Pserimos Town for a few relaxed hours in the sea, not a whole day of “watch the ocean go by.” A long, 25-meter boat with a shaded deck and a spacious sun deck keeps the vibe comfortable, even when the sun is doing its thing. Just plan on packing your own lunch and essentials, because food and drinks are not included.

Key Things To Know Before You Go

• A real pre-snorkel briefing (plus wetsuit fitting): You get instructions on snorkel gear and what to look for in the water before you head in.
• Time in a private blue lagoon with clear water: You are there for swimming and snorkeling, not just a quick stop.
• Small-group feel: The boat runs with a smaller crowd than big party boats, which usually makes the day calmer.
• Indirect supervision in the water: You explore at your own pace with instructors nearby, not constantly hovering.
• You’ll be climbing a ladder to exit: Plan for the physical part of getting back aboard.
• Mixed snorkeling and diving on one boat: Even if you are snorkeling, it’s set up like a dive operation with instructors and gear.

From Kos Harbour to Pserimos Town: the morning rhythm

Your day runs on an efficient clock: departure is around 08:30, and you are back in Kos around 14:30. You meet at the Liamis centre in Kos harbour, about 50 meters from the Dolphins roundabout, at the front of the only traffic lights on the corner of Akti Kountourioti and Meg. Alexandrou.

When you arrive around 08:15 to 08:30, you will fill out a brief medical statement and show your ticket. Then the boat heads toward Pserimos, and the crew uses that travel time to set you up for a smooth snorkeling day.

The 45-minute cruise is not just transit. It is when you get your first sense of the coast views and settle into the pace the rest of the trip will keep.

Safety briefing and snorkel setup that actually helps

Before you get in the water, expect a safety and equipment briefing that runs about 20 to 30 minutes. This matters because snorkeling in open water is easy to underestimate, especially if you are bringing kids, beginners, or anyone who has never used fins and a snorkel setup before.

You are fitted with a wetsuit, mask, snorkel, and fins on arrival in the Pserimos area. The instructors also explain the basic principles for safe snorkeling, including how to use the snorkel properly. In practice, this is the difference between flailing and relaxing, particularly for first-timers.

One more human touch: the crew, including Athena, comes across as friendly and focused, not just “pass the clipboard.” That tone makes a big difference when you are asking questions while gear is on and everyone is getting ready.

Pserimos Town stop: swimming time with a calm, small-boat feel

Pserimos Town is where the real sea time begins. You get an organized start with snorkeling and marine-life viewing built into the day, then you spend hours swimming at your own rhythm.

After you are equipped, you are free to explore in the water under indirect supervision. That means you are not trapped in a tight line, but you still have people there who can help if something feels off.

You can also relax between swims on the boat. The design helps here: there is a shaded deck for downtime and a spacious sun deck if you want full sun. If you hate the packed, loud vibe of larger party boats, this smaller group setup usually feels a lot more breathable.

The private blue lagoon: your best hours in clear water

The highlight is a private blue lagoon with crystal-clear water. It is the kind of spot where snorkeling is easy to plan around, because you can see the water conditions right away once you are in.

During this time, you can mix and match activities. Swim when you want, snorkel when you want, and take breaks for sunbathing in between. The wetsuits also help extend your time in the water, so you are not forced out quickly just because you are a little cool.

This is also why the trip timing works well. You are at the lagoon for long enough to feel like you had a real ocean day, not a rushed “one try and done” session.

Marine life spotting: how to make your snorkel time count

You do not need fancy gear to see marine life, but you do need attention. The briefing you get before getting in includes an overview of local marine life and what to look for while you swim and snorkel.

In the water, the key is slow movement. Swim with small kicks, pause when something catches your eye, then watch without chasing every fish you see. If you move fast, you scare the action away and end up focusing more on your breathing than on the sea.

The day is structured so you get multiple chances to look, including a marine life viewing segment in Pserimos Town. And because the group is smaller, it is easier to find space to hover and watch without constantly colliding with fins.

Boat comfort on the Liamis 25-meter Apollon

The boat is about 25 meters long, with both shade and sun options. That sounds basic, but on a half-day sea outing it makes a huge difference. Shade keeps you from overheating while you wait between swims, and the sun deck makes it easy to recharge with a towel and sunscreen.

Comfort is also about how the boat uses your time. There is enough cruising to enjoy coastal views, but not so much that you feel like the main event is “traveling to snorkeling.”

Also note the trip is wheelchair accessible, but the experience has physical steps built in. You must be able to step on and off the boat, navigate a narrow passageway to reach the front deck, and climb a ladder to get out of the sea. If mobility is a concern, you will want to check whether the ladder and entry path work for your specific needs.

Price and value: is $64 for 5 hours a good deal?

At $64 per person for about 5 hours, this is not a “budget by the skin of your teeth” outing, but it also does not feel inflated. What you are paying for is the boat transport, the captain, full snorkeling equipment, and the safety and marine-life briefing.

Food and drinks are not included, so you should budget for that. A packed lunch is the move, and it fits the half-day format well, since you can eat between swim rounds or after you rinse off.

If your priority is maximum time in the water, the value is strong. Small-group conditions mean you spend less time waiting for space at a ladder or getting squeezed into a cramped swim area. And the full gear plus wetsuit fitting saves you from renting or buying anything to get started.

Who this cruise suits best (and who should skip it)

This trip is a great match if you want an easy, guided snorkeling day without the stress of planning the logistics yourself. It works well for families and mixed groups, including people with kids, because the instructions focus on getting snorkels and fins set correctly.

It is also a solid choice if you prefer a calmer boat vibe. The crowd size is typically smaller than big party boats, which helps you enjoy the sea instead of constantly watching other people’s elbows.

That said, it is not for everyone:

• Non-swimmers should not book.
• You should be comfortable climbing a ladder to exit the water.
• Alcohol and drugs are not allowed.
• You need to be able to step on and off the boat and move through the deck area.

Weather matters too. The boat trip might be canceled due to wind force and direction, so build in flexibility.

Should you book the Kos to Pserimos snorkeling cruise?

Book it if you want a straightforward half-day snorkeling plan with real structure. You will get a wetsuit and gear, a safety briefing that covers snorkel basics, and plenty of time at a private blue lagoon for swimming and marine life viewing. If you care about comfort on board, the shaded deck plus spacious sun deck is a smart setup for a morning start.

Skip it if you are a non-swimmer, you cannot climb out of the water via ladder, or you hate the idea of being in the sea for multiple sessions even at a relaxed pace. And if you are hoping for food on board, plan ahead with a packed lunch.

If your goal is to spend your Kos time in the water and not stuck in transit, this is one of the most practical ways to do it.

FAQ

How long is the Kos to Pserimos snorkeling cruise?

It runs for about 5 hours, leaving Kos around 08:30 and returning around 14:30.

Where do I meet the boat in Kos?

Meet at the Liamis centre in Kos harbour, about 50 meters from the Dolphins roundabout, at the front of the only traffic lights on the corner of Akti Kountourioti and Meg. Alexandrou. You must show your ticket.

What snorkeling gear is included?

Full snorkeling equipment is included, plus you will be fitted with a wetsuit, mask, snorkel, and fins.

Is food and drinks included?

No. Food and drinks are not included, so you should bring a packed lunch.

Is this suitable for non-swimmers?

No. It is not suitable for non-swimmers.

What happens if the weather is windy?

The boat trip might be cancelled due to the wind force and direction.