Pemba is also famous for its rich fishing grounds. Between the island and the mainland there is the deep 50 kilometre wide Pemba channel, which is one of the most profitable fishing grounds for game fishing on the Swahili Coast.A large proportion of the Zanzibar export earnings comes from cloves. The greatest concentration of clove trees is found on Pemba (3.5 million trees) as growing conditions here are superior to those on Unguja island.
Clove trees grow to the height of around 10 to 15 metres and can produce crops for over 50 years. More recently with the booming tourism industry in neighbouring Zanzibar, more adventurous travellers are seeking out the less-crowded Pemba, led by dive tourists seeking the uncrowded and un-spoiled reefs the island offers the experienced diver