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Prison Island Zanzibar

Prison Island Zanzibar

What is Prison Island Zanzibar?

Prison Island, also known as Changuu Island, is a small island located about 5 km northwest of Stone Town. Despite its name, it was never used as a prison for criminals. Instead, it served as a quarantine station for yellow fever in the 19th century.

Today, Prison Island is one of the most popular day trips from Stone Town, attracting visitors with its giant Aldabra tortoises, stunning coral reefs, and turquoise waters.


Why Visit Prison Island?

Prison Island combines history, wildlife, and natural beauty, making it an ideal excursion for travelers who want more than just beaches. Whether you love snorkeling, history, or wildlife encounters, this island has it all.


Top Things to Do on Prison Island

1. Meet the Giant Tortoises

The highlight of the island is the giant Aldabra tortoises, some of which are over 100 years old. These friendly creatures roam freely, and visitors are allowed to feed them under the supervision of guides.

2. Explore the Historic Ruins

Walk through the old quarantine building and ruins that reflect the island’s colonial history. You’ll gain insight into its role in controlling the spread of infectious diseases during the 1800s.

3. Go Snorkeling and Swimming

The island’s clear waters and coral reefs make it an excellent spot for snorkeling. Expect to see colorful fish, starfish, and sea urchins just a few meters from the shore.

4. Relax on the Beach

Prison Island offers quiet sandy beaches with turquoise water, perfect for sunbathing and relaxation after your explorations.


How to Get to Prison Island Zanzibar

Prison Island can be reached by a 20–30 minute boat ride from Stone Town Zanzibar. Local guides and tour operators offer half-day and full-day trips that often include snorkeling equipment and entrance fees.


Best Time to Visit Prison Island

The best time to visit is during Zanzibar’s dry season (June to October and December to February). Calm seas and clear skies make for the best snorkeling and wildlife viewing.


Travel Tips for Visiting Prison Island

  • Entrance Fee: Around $4 per person, excluding the boat ride.
  • Boat Cost: Negotiable, usually $15–30 round trip depending on group size.
  • What to bring: Sunscreen, hat, swimwear, snorkeling gear, and cash.
  • Combine tours: Many travelers combine Prison Island with a Stone Town walking tour for a full-day experience.