 It provides protection for several important tropical ecosystems; coral reefs, mangroves and seagrass beds.Management of the reserve is governed by the Tanzanian Board of Trustees of Marine Parks and Reserves which is the custodian and overseer of the establishment and management of the Marine Protected Reserves in Tanzania.The Dar es Salaam Marine Reserves were first established under the Fisheries Act of 1970 and in 1998 were transferred to the Marine Parks and Reserves (MPRs), Act No.