Reviewed · PRISON ISLAND TOURS
Prison Island: Private Half-Day Tour
Prison Island’s biggest draw is wonderfully simple: giant Aldabra tortoises lumber around a small historic island just off Zanzibar. Add a 30-minute boat ride, old prison buildings, a swim or snorkel, and a private guide who can explain the island in detail, and you have a tidy half-day outing from Stone Town.
I like the private format, since guides such as Mohammed, Musa, Joseph, and Abdullah have been praised for their patience and clear storytelling. I also like the choice between history and sea time: you can study the old buildings, feed the tortoises, then cool off over the coral rocks. The main caution is access. There is no proper dock at the departure point, so you may need to walk through shallow water to board the boat.
Key points to know before booking

- The tortoises are the star: You can see animals of different ages and sizes, including a tortoise reported to be 196 years old.
- A private three-hour outing: You travel with your own group, guide, and boatman rather than joining a large shared excursion.
- History comes with the beach time: The island’s buildings have served as a prison, chapel, and a hiding place for enslaved people after abolition.
- Snorkeling is included: Gear and life jackets are provided, though sea conditions can affect how enjoyable the water time is.
- Plan for a wet boat boarding: Wear sandals or secure water-friendly shoes, especially if you do not walk easily.
- $50 can be good value: The price includes Stone Town transport, boat, guide, conservation fee, equipment, and taxes.
Why Prison Island makes a good short trip

Prison Island, also known as Changuu Island, gives you several Zanzibar experiences in one compact visit. You get a short sea crossing, a guided look at old buildings, close contact with giant tortoises, and time in the water. That mix is useful if you have only a few days in Stone Town and want more than another walking tour.
The island is not a full-day expedition. The advertised duration is three hours, with departures available from 9:00 AM to 3:30 PM. That makes it easy to fit around a morning in Stone Town, a later beach plan, or an evening meal in the old town.
I would think of this as a light, flexible island visit rather than a demanding nature trip. The historical section is guided, the tortoise area is easy to understand, and the snorkeling stop gives you a chance to set your own pace. You can swim, look around the coral rocks, or simply stay on the sand.
The activity has an overall rating of 4 out of 5 from 132 bookings. That suggests a generally dependable experience, while also leaving room for the practical issues that matter here: weather, water access, and how comfortable you are boarding a small boat.
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From Stone Town to the island in 30 minutes

Your guide and boatman meet you for the trip, with pickup arranged from accommodation in Stone Town. The crossing takes about 30 minutes, which is long enough to feel like a proper island trip without taking up half your day.
The boat is described as a steam-engine wooden boat. The key point for you is that this is a small, traditional-style boat ride rather than a large ferry transfer. It adds character, but it also means you should pay attention to the boarding arrangements and sea conditions.
The departure point may require a walk through water because the boat comes close to shore rather than pulling alongside a dock. One person with limited walking ability specifically found this important, and another group wore Teva-style sandals for the crossing. I recommend footwear that stays secure and can get wet.
Bring your hat, sunscreen, swimwear, and comfortable shoes. Do not wear anything that you would worry about splashing. A small bag with a towel and dry change of clothes would also be sensible, although those items are not specifically listed as included.
Prison Island’s old buildings and difficult past
The guide’s history talk gives the island more weight than its size suggests. The buildings have served several purposes over the years, including a prison and a chapel. They were also used as a hiding place for enslaved people after abolition, an especially important part of the island’s story.
This is where the private format earns its keep. Guides such as Musa and Mohammed have been praised for explaining the backstory in detail and answering questions patiently. You are not limited to a short speech before the group moves on. You can ask about the buildings, the island, and the surrounding parts of Zanzibar.
Do not expect a large museum with a long series of exhibits. The appeal is the setting and the guide’s explanation of how the buildings changed purpose. A good guide helps you connect the worn structures with the political and social history of the island.
I would allow enough attention for this section before rushing toward the tortoises. It is easy to focus only on the animals and turquoise water, but the historical stop is what gives the place its identity.
Meeting the giant tortoises
The giant tortoises are the most memorable part for many people, and the reason to plan your timing carefully. You can see tortoises of different ages and sizes, feed them, and take photographs with them.
One tortoise was described as 196 years old. That is the sort of detail that makes the visit feel special, but remember to follow the guide’s instructions around the animals. The creatures are old and valuable, so gentle contact and calm behavior matter.
I recommend visiting the tortoises before snorkeling, especially if you start early. The tortoise area can become crowded later, and getting there first gives you more space and a better chance to watch the animals without a queue of people pressing in.
The word precious fits here in a practical sense. These are not quick wildlife sightings at a distance. You can spend time looking at their size, movement, and age, then take photographs. For children, families, and anyone who enjoys animals, this may be the strongest reason to book.
Still, do not expect a wild encounter. The tortoises are part of a managed conservation setting, and the visit is designed for close viewing. That is convenient and accessible for many people, but it is different from spotting wildlife in a remote natural area.
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Snorkeling, swimming, and beach time
After the historical visit and tortoises, you can swim or snorkel near colorful coral rocks in turquoise water. Snorkeling equipment is included, as are life jackets. If you are not confident in the water, tell the guide and use the jacket.
The sea portion is flexible, which I consider a strong feature of the tour. You do not have to be an experienced snorkeler to enjoy it. You can look around in the shallows, swim, or remain on the beach while the rest of your group uses the equipment.
The quality of the water experience depends on weather and sea conditions. One group had poor weather but still enjoyed the guide and the outing. That is a useful reminder not to judge the trip only by perfect beach photographs. On a clear, calm day, the coral rocks and water should provide the best setting. On a rougher day, the history and tortoises become more important.
Wear swimwear under your clothes so you do not have to change in a hurry. Sandals are useful for the shore and boat boarding, while comfortable shoes are better for any walking around the island. The supplied information specifically advises bringing both swimwear and sandals.
The guides make the private format worthwhile
The guide can shape this experience more than any single attraction. Mohammed has been praised for his knowledge of Zanzibar’s history and culture, his patience, and his willingness to answer repeated questions. Musa was also singled out for a detailed account of Prison Island’s past.
Other named guides include Joseph, Abdullah, and Ali. The tour offers guides speaking Spanish, English, French, German, Italian, and Russian, subject to availability when you book.
A private group matters if your interests are uneven. You might want more time with the tortoises while someone else wants to swim. You may have many questions about the prison buildings, or you may prefer a shorter history talk and more beach time. A private guide can respond to your group rather than follow a fixed crowd schedule.
Communication is another practical strength. One booking group arranged the hotel, pickup time, and other details with Babu Tours & Safaris through WhatsApp the day before. I would use that option to confirm your exact pickup point, particularly if your accommodation is difficult to find.
What the $50 price includes
At $50 per person, this tour offers solid value if you want transport and equipment handled for you. The price includes return transportation from Stone Town accommodation, the boat, guide, conservation fee, snorkeling gear, life jackets, and government taxes.
That is more useful than a low headline price that leaves you arranging a boat, paying an island fee, and hiring a guide separately. The private group also adds value for couples, families, or friends who want control over the pace.
The price does not include transport from accommodation outside Stone Town. The information also says pickup can be included for a hotel outside Stone Town, so confirm this directly before booking if you are staying beyond the old town. Do not assume the Stone Town transfer price covers every part of Zanzibar.
You can cancel up to 24 hours before the activity for a full refund, and the reserve-now, pay-later option keeps your plans flexible. Those terms are useful if your Zanzibar schedule may change, though the sea portion can still be affected by weather.
Who should book this island tour
I would recommend Prison Island for first-time visitors to Zanzibar who want a manageable mix of culture, animals, and beach time. It suits couples, families, and small private groups, especially if everyone likes having several choices during the same outing.
It is also a good fit if you are staying in Stone Town and want a half-day plan that does not require a long road transfer. The three-hour length leaves you with time for lunch, more sightseeing, or a quiet afternoon.
You may want to skip it if your main goal is a serious snorkeling trip. The sea stop is part of a wider historical and wildlife outing, not a specialist reef excursion. It may also be a poor fit if you have mobility impairments, since the boat boarding can involve walking through water and the tour is not listed as suitable for people with mobility limitations.
Alcohol, drugs, and pets are not allowed. That is straightforward, but it is worth noting if you are planning a casual beach outing with a drink. This is a guided conservation and history visit, not a party boat.
My practical advice for a better visit
Start as early as your schedule allows. A 9:00 AM departure gives you the best chance of reaching the tortoises before the area gets crowded, and an early crossing can be more comfortable before the day becomes hotter.
Put your swimwear on before pickup and wear sandals or secure water shoes. Since the boat may come close to shore without a dock, you want footwear that handles water and will not slip off.
Keep your phone or camera protected during boarding. The boat ride is part of the fun, but splashes are a real possibility when you are entering from the shore.
Tell the guide what you want from the day. If the group has a keen historian, ask for more detail about the buildings. If children are eager to see the tortoises, go there first. If snorkeling is the priority, ask how the sea conditions look before you commit to a long swim.
Finally, bring patience for the weather. You may get clear water and bright coral colors, but the trip still has value when the sky turns gray. The guide, the buildings, and the tortoises do not disappear when the beach photographs lose their sparkle.
Should you book Prison Island?
Book this tour if you want an easy private outing that combines Zanzibar history, giant tortoises, and a short sea adventure. At $50, the included transport, guide, boat, conservation fee, equipment, and taxes make it a reasonable choice for a small group.
I would book early in the day, confirm the pickup and boat boarding details, and wear shoes that can get wet. Skip it if you need step-free access or want a full-scale snorkeling expedition. For most people staying in Stone Town, though, Prison Island offers a memorable three hours without demanding an entire day.
FAQ
How long does the Prison Island tour last?
The tour lasts three hours, including the boat trip, guided island visit, tortoise encounter, and time for swimming or snorkeling.
What time can the tour start?
The private tour can begin at any time from 9:00 AM to 3:30 PM, subject to availability.
Is hotel pickup included?
Return transportation from accommodation in Stone Town is included. Transportation from accommodation outside Stone Town is not included, so confirm the arrangements if you are staying elsewhere.
Is snorkeling equipment provided?
Yes. Snorkeling gear and life jackets are included.
Can I join if I am not a confident swimmer?
Yes. Life jackets are provided for people with limited water confidence. You can also choose to relax on the beach rather than swim or snorkel.
What languages can the guide speak?
Guides are available in Spanish, English, French, German, Italian, and Russian.
Do I need to bring swimwear?
Yes. Bring swimwear, sunscreen, a sun hat, and comfortable shoes. Sandals are especially useful because boarding the boat may require walking through shallow water.
Is the tour suitable for people with mobility impairments?
No. The activity is not listed as suitable for people with mobility impairments, and boarding may involve walking through water because there is no dock at the departure point.
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