About a kilometre south of the National Park centre, the mangrove boardwalk begins under the shade of an old tamarind tree. Here you can walk amongst the forest in the sea. The brackishwater that flows through the mangrove is a nursery ground for hundreds of species of tropicalfish, which can be seen feeding in the shallow waters, whilst crabs and other molluscs can be observed feasting in the nutrient rich mud. Perhaps one of the most famous and endearing residents of the Jozani-Chwaka Bay National Park is the Zanzibar Red Colobus monkey. Found only on the main island of Zanzibar, the Zanzibar Red Colobus is recognised as a separate species (Piliocolobus kirkii) and is said to be endemic to Zanzibar. A visit to Zanzibar is not compete without seeing one of the rarest monkeys in Africa, with less than 2000 remaining in the world.