Rhodes Town: Submarine Cruise with Underwater Views

Watch fish swim past Rhodes. This short Poseidon Submarine cruise lets you view the harbor and Old Town from inside a cabin below the waterline. Or you can step up on deck for ocean air and skyline views.

I especially like the 360° panoramic underwater windows and the way the timing is built around the best viewing moments. The highlight is the diver entering the water and feeding fish right in front of your windows. One drawback to plan for: visibility can vary, and if windows are dirty or the water gets cloudy, it can be harder to spot fish clearly.

Key things to know before you go

• 45 minutes is just right for a quick Rhodes activity without eating your whole day
• 2.5-meter-underwater observatory means you stay above sea level while still seeing sea life
• Diver feeding happens in front of the windows, which makes fish spotting easy
• Mandraki Harbour, Palace area, and Old Town pass by on the surface quickly
• Cabin and deck both work depending on whether you want AC or sea breeze
• Audio is helpful, but volume can be inconsistent, so plan to rely on the visuals too

A 45-minute look at Rhodes from under the waterline

Rhodes has a lot going on above sea level, but the fun here is seeing the same sights with a sea-life bonus. The submarine stays above the water, while the viewing area sits about 2.5 meters below the surface. That setup keeps the experience more comfortable than a wet, cold, or seasick option.

The cruise itself is 45 minutes total, and it moves at a pace that works even if you get bored fast. You get a harbor loop, some famous Rhodes landmarks from the water, and then the underwater viewing portion that people actually remember.

At about $23 per person, it’s priced like a value activity. It’s not a private tour, and it’s not meant to be a half-day expedition, but for the time and what you see, it usually makes sense.

Mandraki Harbour, where the route starts and the views begin

The action starts at Mandraki Port at Poseidon Submarine, right opposite the building of the Bank of Greece. If you like knowing where you’re going, this is the kind of meeting point that’s easy to find once you’re in the port area.

From there, you cruise past Mandraki Harbour first. This leg is short, but it sets the mood. You get your first look at Rhodes’ waterfront from the water, including the working port feel that you miss if you only walk streets.

This part is also a good warm-up if you’re traveling with kids or anyone who needs a low-pressure start. You’re on the water right away, and you’re not stuck watching the same scene for 30 minutes before anything interesting happens.

Palace of the Grand Master and Old Town walls, history without the grind

A big part of Rhodes Town is the Old Town experience, and the cruise gives you a different angle. The route passes the area of the Palace of the Grand Master of the Knights of Rhodes and then continues toward Old Town.

The timing is tight, but that’s the point. You’re not signing up for a long lecture. You’re getting quick orientation, like seeing a highlight reel of Rhodes Town from the water.

And because you’re moving, the Old Town walls and waterfront buildings keep changing as the boat curves. It’s a classic travel trick: short sightseeing moments can still feel complete if the perspective changes.

If you want to pair this with time on land, this cruise is a smart opener. You’ll come back to the streets with a better sense of where the harbor and key landmarks sit.

The submarine windows: the 360° part you will care about

This is not a standard sightseeing boat. The main reason to book is the underwater viewing experience inside the cabin.

You sit in an air-conditioned comfort cabin below the surface, then look out through huge windows with a 360° panoramic view. That means you’re not trying to see fish through a small porthole. You’re surrounded by the water view, so when fish come into range, you notice right away.

A practical tip: go where you can see clearly rather than where you feel most comfortable. If the cabin gets crowded, it’s still worth adjusting your position for cleaner sightlines.

Also, the vessel stays above sea level the whole time. So if you’re sensitive to motion, this format tends to feel easier than more traditional sea adventures.

The diver feeding moment, and how to photograph fish without stress

The diver feeding session is the payoff. When the diver enters the water and feeds fish, the fish gather where you can actually see them. That predictable timing helps a lot, especially if you’re not sure where to look underwater.

When this works best, it feels like you’re watching an aquarium without glass. The water around the harbor can be full of life, and the window view makes the colors obvious even if you’re not a marine expert.

Bring your camera ready, but also keep expectations realistic. A few factors affect what you can capture: light levels, water clarity, and how close the fish move to the window. Some people found the experience strongest when the water was clear and the windows were clean enough for sharp viewing.

One thing to plan for is crowd flow. The boat can be busy, and when people want the underwater spot, they all want it at once. If the lower area gets tight, staff may help rearrange seating so more people can see comfortably.

Deck versus cabin: comfort, heat, and sound reality checks

You get a choice in how you experience it. If you want temperature control, you’ll likely spend most of your time in the cabin. If you prefer sea breeze and open-air views of Rhodes, you can step onto the deck.

Most of the time, the cabin makes sense because it’s air-conditioned and designed around underwater viewing. Still, there are occasional comfort complaints about the lower space feeling hot. If you run warm easily, you may want to alternate between cabin windows and short deck breaks.

Sound is another practical detail. The tour includes an audio guide, and there’s also a live tour guide in English. The audio guide is available in English and German, but a few people noted difficulty hearing the recording clearly.

So here’s the smart approach: let the commentary give you names and context, but rely on the visuals for your main experience. With the fish view, you don’t need perfect audio to enjoy the core moment.

And yes, there’s a bar onboard. Drinks are not included, but having the option makes the cruise feel a bit less like a rushed transfer.

Itinerary flow: why each stop is short and intentional

This cruise works because it keeps moving and it staggers the experiences. You start with Mandraki Harbour, then you pass the Grand Master’s Palace area, then you catch Old Town views. After that comes the part you paid for: marine life viewing and the diver feeding moment.

The underwater viewing portion is where the boat truly slows down in your mind. It gives you time to watch fish behavior, not just see a quick glimpse.

From a value standpoint, the short surface segments matter. They give you context for what you’re seeing underwater. Seeing Rhodes’ harbor from water at the start makes the later underwater view feel connected instead of random.

If you only want the underwater part, you’ll still enjoy the surface loop because it sets up the location and atmosphere. And if you’re with family, the mix helps prevent the classic problem of a single boring activity.

Price and value: what $23 gets you in Rhodes Town

At $23 per person, this feels like one of the easier ways to add something memorable without spending a fortune. You’re getting a real boat ride, a below-water viewing setup, and a guided component through audio plus English live guidance.

It’s also a good deal because you’re not stuck for hours. Forty-five minutes is long enough to experience the underwater segment properly, but short enough that you can still explore Rhodes Town afterward.

The onboard bar is a nice extra, even if you’ll likely choose a water or soft drink rather than something fancy. And the fact that it’s wheelchair accessible is a meaningful plus for planning.

My rule of thumb for value here: if you want a fast, family-friendly activity with a clear highlight, this is the kind of booking that usually makes sense. If you’re hoping for a long, quiet, low-crowd experience, you may feel the time and space are working in favor of the attraction, not against it.

Who should book Poseidon Submarine, and who might skip it

This works best for families, couples, and anyone who likes a visual experience more than a lecture. It’s also a strong choice for people who want an activity that doesn’t require seawater tolerance or long walking routes.

Kids usually do well here because fish are visible fast, and the diver feeding provides a clear moment to anticipate. Even adults who think they are not into marine life can get hooked once fish start clustering near the windows.

If you are a serious marine enthusiast looking for deep habitat variety, temper expectations. The underwater portion is focused and timed around a specific moment. Some people wished for more species variety, and a few noted the marine world feeling less varied than they hoped.

Also pay attention to timing. The 18:30 cruise does not include a diving show. If you care most about the diver moment, double-check which departure time you choose.

Should you book this Rhodes submarine cruise

Book it if you want a short, easy win in Rhodes Town: harbor views, landmark angles, and the underwater window experience with a diver feeding session. The price is in the range where you can take a chance and feel good about it, especially if you’re tight on time.

Skip it if sound quality matters a lot to you and you need perfect narration, or if you’re specifically hunting for lots of different marine habitats rather than a focused fish-feeding highlight. Also consider weather and water clarity, because those two things can affect how crisp the fish view looks.

If you’re planning your Rhodes day and you want something different from the usual streets and beaches, this submarine ride is one of the more practical choices.

FAQ

How long is the Rhodes submarine cruise?

The total duration is 45 minutes.

Where is the meeting point?

You meet at Mandraki port, Poseidon Submarine, opposite the Bank of Greece building.

What does the cruise include?

It includes the submarine cruise, an audio guide in English and German, and access to the bar onboard.

Are drinks included?

No. Drinks are not included, but there is a bar onboard.

Is there an option to see the view outside the cabin?

Yes. You can relax in the air-conditioned cabin below the surface or walk out onto the deck for ocean breeze and scenic views.

Is there live guiding, and what language is it?

There is a live tour guide in English, plus an audio guide in English and German.

Is it wheelchair accessible?

Yes, the activity is wheelchair accessible.

Does the 18:30 cruise include the diver show?

The information says the 18:30 cruise doesn’t include a diving show.

Is there free cancellation?

Yes. Free cancellation is available up to 24 hours in advance for a full refund.

Can I reserve now and pay later?

Yes, you can reserve now and pay later.