Combine history and beach time on a single day trip from Stone Town: explore Prison Island’s tortoises and ruins, then relax and snorkel at Nakupenda Sandbank. This full-day boat tour pairs cultural context with shallow-water snorkeling and a seafood lunch on the sand.
More ways to explore the area's outdoor wonders
Step off Stone Town’s bandstand and the sea takes hold of the day: a short dhows ride pushes you past the harbor, gulls tacking overhead while the ocean pulls you toward two very different attractions. Prison Island’s limestone fort rises like a faded monument—battered walls, shady figs and the deliberate shuffle of Aldabra giant tortoises that have outlived empires. Their slow movements give the place an oddly patient rhythm.
Difficulty
moderate
Duration
9 hours
Fitness Level
Moderate fitness: short walks on uneven ground, standing on boats and occasional ladder climbs; comfortable for most active travelers.
Wildlife
History
Prison Island (Changuu) was used in the 19th century as a quarantine station and later as a prison; its fort and tortoise population reflect layered colonial and maritime histories.
Conservation
Nakupenda’s sandbank and nearby reefs are vulnerable to erosion and coral bleaching; choose operators who practice reef-safe boating and support local conservation efforts.
Reserve your spot on the Experience Nakupenda Sandbank & Prison Island Tour today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Meet at Forodhani Garden
Arrive 15–30 minutes early to the bandstand meeting point in Stone Town for a prompt boat departure and ticket handoff.
Use reef-safe sunscreen
Apply biodegradable sunscreen before boarding to protect coral reefs and reduce reapplication on the water.
Bring water shoes
Coral sand and rocky patches make lightweight water shoes useful for both Prison Island and sandbank access.
Protect electronics
Stash phones and cameras in a waterproof pouch to avoid salt spray damage during transit and on the sandbank.
Reef-safe sunscreen
Protects skin while minimizing harm to coral and marine life.
summer
Water shoes
Protects feet on sharp coral and slippery rock when landing on islands and sandbanks.
Snorkel mask (or set)
Improves snorkeling comfort and lets you see reef fish in clear, shallow water.
summer
Dry bag
Keeps valuables and spare clothes dry during boat transfers and beach stops.