Wheras Zanzibar is a low-lying coral atoll with broad sandy beaches, Pemba is a proper island with incredibly fertile hilly terrain and spectacular deepwater drop-offs for divers.
Despite its proximity Pemba is really off the beaten track, getting less than 1% of its neighbour's visitor traffic. Those who do venture here should find an incredibly authentic Swahili Coast experience.
Regular flights make getting here relatively easy these days, more of a problem is the limited choice of accommodation.
At the top of the price range is the stylish
Fundu Lagoon, whilst
The Manta provides a decent and slightly lower alternative.