Zanzibar: Prison Island and Nakupenda Sandbank

Changuu Island, better known as Prison Island, gives this six-hour outing more substance than a simple beach trip. You’ll walk among old prison buildings, see enormous Aldabra tortoises brought from the Seychelles, and then trade stone walls for the clear water and pale sand of Nakupenda Sandbank.

I like the short boat ride from Stone Town, which gets you out on the water without turning the day into a long ferry journey. I also like the generous four-hour stop at Nakupenda, where seafood, fruit, swimming, and snorkeling all fit into one easy afternoon. The main caution is guide consistency: one booking problem was reported, and the quality of guiding at the sandbank can vary, especially if you need commentary in French rather than English.

• Giant Aldabra tortoises: See animals that can weigh up to 200 kilograms and live for many decades.
• Two very different stops: Pair Changuu’s prison ruins and animal sanctuary with Nakupenda’s open sea and sand.
• Only 15 minutes by dhow: The boat transfer from Stone Town is brief, with wind and sea views along the way.
• Seafood lunch on the sandbank: Fresh seafood, tropical fruit, bottled water, and soda are part of the package.
• Four hours at Nakupenda: You have time for snorkeling, swimming, sunbathing, and a relaxed meal rather than a rushed photo stop.
• A private boat is included: At $58 per person, the value depends partly on how many people share the boat and on the extra entry fees paid locally.

From Forodhani to Changuu Island

Your day begins at Forodhani, the waterfront meeting point in Stone Town. From there, you board a dhow for the 15-minute trip to Changuu Island.

That short crossing is part of the pleasure. You get open-water views and a breeze in your face, but you are not committing to a lengthy sea journey. If you are prone to seasickness, the brief transfer is still worth treating seriously, since boats can move with the water and the tour spends much of its day around the coast.

The tour includes a private boat transfer, a life jacket, and a guide who speaks English. The information does not specify the boat size or the number of people in your party, so ask for those details before paying if space and privacy matter to you.

The meeting point is practical for anyone staying near Stone Town, though you should confirm the exact departure time and meeting instructions in advance. One serious problem recorded for this experience involved the guide not appearing at the meeting point, so clear communication on the day is sensible. Keep the operator’s contact details handy and arrive with time to spare.

Changuu Island and the old prison buildings

Changuu is often called Prison Island, though its past is more complicated than the nickname suggests. The old prison buildings were erected during the British colonial period, and the remains provide a glimpse into Zanzibar’s former use of the island.

You’ll have about one hour here for a guided visit, sightseeing, and photographs. The ruins are the main historical reason to stop, but expectations matter. This is not a large museum with rooms full of displays. The appeal comes from seeing the old structures in their island setting and hearing how the site was used.

I would pay close attention during the guide’s explanation, since the historical part can feel brief if you simply walk around taking pictures. The tour is conducted in English, and there is no stated French-language guide. If you need French commentary, this may not be the right choice, as language affected the enjoyment of one booking.

The island stop works best as one half of a mixed day. If you want a long, detailed history tour, Prison Island may feel too short. If you want a taste of Zanzibar’s past before spending time in the sea, the one-hour visit gives the day useful variety.

Meeting Zanzibar’s giant tortoises

The animal sanctuary is likely to be the most memorable part of Changuu. The Aldabra tortoises are among the largest tortoises on earth, with some weighing as much as 200 kilograms.

These are land tortoises, not sea turtles, and their size can surprise you. You’ll have the chance to see them up close, learn about their origins, and take photographs. They were brought to Zanzibar from the Seychelles, which adds a useful piece of island history to the visit.

The tour description allows you to interact with the tortoises, but you should follow the guide’s instructions about touching and feeding. Large animals can be calm without being toys, and respectful behavior makes the encounter better for everyone.

The sanctuary also has peacocks, known for their large, colorful feathers. They are linked with beauty, royalty, and good fortune on Prison Island, so keep an eye out for them as you walk between the ruins and the tortoise area.

This stop is especially well suited to families and anyone who enjoys wildlife but does not want a demanding nature excursion. You are not hiking through difficult terrain or waiting quietly for a distant animal. The tortoises are the focus, and they are easy to see.

Four hours at Nakupenda Sandbank

After Changuu, the boat takes you to Nakupenda Sandbank, where the pace changes completely. The sandbank is surrounded by clear blue water and is used for swimming, snorkeling, sunbathing, and relaxing.

You have about four hours here, which is a real advantage. Many beach stops give you just enough time to get wet and take a picture. Here, you can settle in, snorkel, eat, and return to the water without watching the clock every few minutes.

The exact appearance of a sandbank depends on the tide and sea conditions. You may find a broad strip of exposed sand, or a smaller area surrounded by water. Either way, the attraction is the setting: shallow-looking clear water, open sky, and a temporary beach reached by boat.

Snorkeling equipment is included, including a mask, snorkel, and fins. The tour also includes marine life viewing, and you can look for coral reefs and fish in the surrounding water. One useful tip is to ask the guide where the fish are most visible. A particularly productive area can be near the side where boats are moored, so do not assume the best snorkeling is directly beside your towel.

The sandbank stop is not only about snorkeling. You can swim, sunbathe, or simply sit with a drink and watch the boats. If you do not enjoy being in the water for long, the four-hour period may feel lengthy, but the included lunch and relaxed schedule help fill the time.

A seafood lunch with fruit and drinks

The meal is one of the strongest practical reasons to consider this tour. A fresh seafood lunch is served at Nakupenda, along with seasonal tropical fruit, bottled water, and soda.

The food helps turn the sandbank from a short excursion into a half-day outing. You do not need to leave the water early to find a restaurant in Stone Town, and the meal arrives at the place where you are already spending most of the afternoon.

The seafood is described as fresh and well cooked, but the precise menu is not listed. If you have allergies or strict dietary needs, ask before departure rather than assuming substitutions will be available. The same applies to vegetarian meals, since no vegetarian option is specified.

Seasonal fruit adds a welcome light finish after time in the sun. You should still bring any extra snacks you need, since the included food is limited to the stated seafood lunch, fruit, water, and soda.

Lunch also gives the day a natural pause. You can swim or snorkel first, eat, and then spend the remaining time relaxing. The order may depend on conditions at the sandbank, so treat the schedule as flexible rather than expecting a precise restaurant-style service.

What the $58 price really covers

At $58 per person, this is a fair price for a six-hour coastal excursion if you value having several major costs bundled together. You receive a private boat transfer, an English-speaking guide, snorkeling equipment, a life jacket, bottled water, soda, tropical fruit, and a seafood lunch.

The private boat is the key value point. If you are traveling with family or a small group, a private transfer can make the day feel more personal and can reduce the waiting that sometimes comes with a large shared excursion. The available information does not state the maximum group size, so confirm what private means for your booking.

The price does not include entry fees. Those are payable on the day, and the amount is not provided here. That makes it harder to calculate the final cost in advance, so ask the operator for the current fee before you commit.

The package is strongest for people who want an easy, all-in-one day. Arranging separate transport to Changuu, a boat to the sandbank, snorkeling gear, lunch, and a guide could take more effort and may not save money. If you only want a quiet beach day, though, you may find the historical stop and entry charges add more than you need.

Guide quality and language matter

The guide can shape the day more than any single stop. A good guide can explain the prison buildings, point out the peacocks, help you understand the tortoises, and show you where to look for fish at Nakupenda.

The guide language is English. No guide names are provided, and the experience does not promise French, German, or other languages. If you are comfortable in English, that should be straightforward. If you want detailed commentary in another language, confirm availability before booking.

The feedback attached to this experience is mixed but leans positive, with an overall rating of 4.1 from 40 reviews. The best comments praise the friendly guide, the freedom to take enough time, the tasty lunch, and the fish around the boats. The weaker points are also clear: one person missed the guide at the meeting point, and another found the sandbank guiding less effective than the Prison Island portion.

I would treat this as a good reason to ask questions early. Confirm where to meet at Forodhani, confirm the start time, and tell the operator if historical explanation or snorkeling guidance is important to you. These simple steps will not change the sea or the tide, but they can prevent avoidable frustration.

Who will enjoy this half-day outing

I recommend this tour most to you if you want history, animals, and beach time in one day. It suits first-time visitors to Zanzibar who want to see more than Stone Town but do not want to spend a full day on a long island transfer.

Families may like the giant tortoises and peacocks, while couples and friends can split their time between snorkeling and a seafood meal. The short boat ride is also helpful if you want a taste of Zanzibar’s coastal scenery without a lengthy crossing.

Strong swimmers and casual snorkelers can both take part, since swimming is optional and the equipment is supplied. You should still use the life jacket if advised and listen to the guide around the boats.

This may not suit you if you want a detailed museum visit, a full historical tour, or a completely private beach with no other boats nearby. Nakupenda is popular, and the experience includes marine viewing around an active boat stop rather than promising a silent, empty shore.

The activity is listed as wheelchair accessible, which is useful, but the practical details of boarding the dhow and moving onto the sandbank are not explained. If you use a wheelchair, contact the provider first to confirm the exact assistance and boat arrangements.

Practical choices before you go

Wear clothing that can handle sea spray and sand. Bring sun protection, though the included bottled water and soda help with hydration during the day.

Keep your phone or camera protected on the boat and around the water. The tortoises, peacocks, ruins, and sandbank all offer good photo subjects, but you will want a dry way to carry your device.

Plan your expectations around a mixed experience. Prison Island is a compact historical and wildlife visit, while Nakupenda is the longer, more relaxed part of the day. If the ruins do not hold your attention for an hour, the sandbank gives you plenty of time to enjoy the outing in your own way.

The tour offers free cancellation up to 24 hours before departure and lets you reserve now and pay later. Those terms are useful if your Zanzibar plans are still shifting, but they do not remove the need to check the meeting point and departure details close to the day.

Should you book Prison Island and Nakupenda?

I would book this tour if you want a well-rounded six-hour introduction to Zanzibar’s nearby waters. The short boat transfer, impressive tortoises, old prison buildings, snorkeling, seafood lunch, fruit, and drinks make the $58 price reasonable, even with entry fees added separately.

Book with realistic expectations. The best part for many people will be the tortoises and the long Nakupenda stop, not an in-depth history lesson. Confirm the meeting details, ask about the entry charges, and make sure English guiding works for you.

If those points fit your plans, this is a useful choice for combining several Zanzibar highlights without arranging each piece yourself. If you mainly want quiet swimming or detailed historical interpretation, consider an option focused on only one of those interests.

FAQ

Where does the tour start?

The meeting point is Forodhani in Stone Town, Zanzibar.

How long does the experience last?

The tour lasts six hours.

How long is the boat trip to Prison Island?

The listed dhow transfer from Stone Town to Changuu Island takes about 15 minutes.

What is Prison Island called locally?

Prison Island is commonly known as Changuu Island.

What can I see on Prison Island?

You can see old prison ruins, Aldabra tortoises, and peacocks. The island visit includes guided sightseeing and time for photographs.

How large are the Aldabra tortoises?

The tortoises can weigh up to 200 kilograms and are among the largest tortoises in the world.

What can I do at Nakupenda Sandbank?

You can snorkel, swim, sunbathe, relax, view marine life, and take part in the included lunch stop.

Is snorkeling equipment provided?

Yes. The tour includes a mask, snorkel, and fins, as well as a life jacket.

Is lunch included?

Yes. A seafood lunch, seasonal tropical fruit, bottled water, and soda are included.

Is the tour guided in English?

Yes. A live English-speaking guide is included.

Are entry fees included in the price?

No. Entry fees are paid on the day and are not included in the $58 price.

Can I cancel the booking?

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