Their primary objective is to help conserve and ensure the sustainable use of marine ecosystems. These environmental objectives can, for example, be to protect depleted, threatened, rare or endemic species or populations, conserve habitats, or prevent outside activities from adversely affecting the MPA. In the Galapagos, for example, the marine reserve introduced in 2000 was intended to: 1) reduce conflicts between uses, principally tourism, fishing and scientific research, 2) protect marine biodiversity, and 3) promote sustainable uses. The goals of other MPAs are highlighted in Annex 3.A1. In terms of zoning, for example, if an area is to be designated as an MPA with the sole objective to protect vulnerable corals and sponges on a deep ocean bottom, there would be little or no risk posed by allowing non-bottom contact fishing in the area.