They are sinking - 9 inches every 100 years!
But the Kwajalein tidal gauge operated by the National Oceanic and Atmospheric Administration (NOAA) shows the mean sea level rise for the atoll is only 2.32 millimeters per year, which is equivalent to just 0.76 feet of sea level rise over 100 years.
PS: If you live on an island where the highest point is 33 feet MSL....MOVE! Heck, at current rates, the island will disappear in just 4,400 years - 6418 AD!
If the sea level is rising 12 mm around the Marshall Islands, it is rising 12mm in the rest of the world as well.
Water seeks its own level. I learned that in Junior High Science class.
The U.N. claimed at the time sea level is rising in the Pacific around the Marshalls at a much higher rate than elsewhere in the world, according to BBC. The Marshall Islands say 12 milimeters of sea level rise per year between 1993 and 2009 while the rest of the world only saw 3.2 millimeters per year.
—
that 3.2 mm translates to about 1/8 inch. There is no way one can measure a 1/8 inch difference on an ocean subject to wind and tidal forces.