I.against [美 əˈɡɛnst, 英 əˈɡɛnst, əˈɡeɪnst]介词against often appears as the second element of certain verb structures in English (come up against, guard against, turn against, etc). For translations, see the relevant verb entry (come, guard, turn, etc).
While the amount of protection it can provide against tsunamis and surges is a point of debate, the rehabilitation of mangrove areas will potentially be a boon for biodiversity.