Hop a short boat from Stone Town to Prison Island (Changuu) to meet century-old Aldabra tortoises, explore historic prison ruins, and snorkel clear reef channels. This compact shore excursion combines gentle walking, marine wildlife and cultural storytelling—ideal for half-day travelers.
Hop a short boat from Stone Town to Prison Island (Changuu) to meet century-old Aldabra tortoises, explore historic prison ruins, and snorkel clear reef channels. This compact shore excursion combines gentle walking, marine wildlife and cultural storytelling—ideal for half-day travelers.
Book with Zan Archipelago Tours & Safaris
Book directly with Zan Archipelago Tours & Safaris for the best rates and real-time scheduling.
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Operated by Zan Archipelago Tours & Safaris · Stone Town, Zanzibar
A short skiff cuts through the Indian Ocean off Stone Town and the silhouette of Prison Island—Changuu—grows from blue into ochre and green. Palm-fringed beaches and low coral outcrops frame a compact island where century-old Aldabra tortoises move with deliberate curiosity and the reef drops away into clear snorkeling channels.
easy.
3 hours.
Suitable for most fitness levels; involves short flat walks (under 1 km total) and brief boat transfers.
Typical traditional boat transfers take about 20–30 minutes each way depending on sea conditions.
Yes—there are clear nearshore reefs for snorkeling; bring your own mask or rent equipment locally and follow guide instructions.
Tortoises are accustomed to visitors but remain wildlife; approach calmly, avoid sudden movements, and don't feed them outside of guided, managed interactions.
Yes—walking is easy and the boat can be managed by families; non-swimmers can join but should wear life vests during boat and snorkeling activities.
Changuu was developed in the late 19th century as a quarantine and later associated with prison uses; its buildings reflect Zanzibar’s colonial and trade-era layers.
The island’s reef and tortoise population are managed locally—use reef-safe products, avoid touching coral, and follow guides to minimize disturbance.
Zan Archipelago Tours & Safaris operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




Book with Zan Archipelago Tours & Safaris
Book directly with Zan Archipelago Tours & Safaris for the best rates and real-time scheduling.
Reserve Now