estuarine       
adjective uk/ˈes.tʃu.ə.raɪn/ us/ˈes.tu.ə.raɪn/
 河口的,港湾的
relating to an estuary (= the wide part of a river at the place where it joins the sea)
  estuarine species 河口物种 
 She is an authority on estuarine ecology. 她是河口生态学的权威。 
 See: estuary
 - More examples
 - These scientists have concentrated their research on estuarine habitats.
 - Fluctuation of water levels has an ongoing effect on estuarine ecosystems.
 - The estuarine delta is filled with marshes and migrating birds.