The study by Paul Kench and Arthur Webb recognises that the islands are extremely vulnerable to sea level rise, and concluded that: "This study did not measure vertical growth of the island surface nor does it suggest there is any change in the height of the islands. Since land height has not changed the vulnerability of the greater part of the land area of each island to submergence due to sea level rise is also unchanged and these low-lying atolls remain immediately and extremely vulnerable to inundation or sea water flooding."