Read here. As multiple studies have found before, the scientific sea level observations contradict the predictions of the likes of Al Gore and James Hansen. The accelerating sea level claim is at this point a pure fantasy concocted to fool the low IQ of MSM-types and Hollywood celebrities.
The study identified natural ocean and climate patterns to be the prime cause of sea level variability.
"The 20th century regional and global sea level variations are estimated based on long-term tide gauge records.....The global mean sea level for the period January 1900 to December 2006 is estimated to rise at a rate of 1.56 ± 0.25 mm/yr which is reasonably consistent with earlier estimates, but we do not find significant acceleration. The regional mean sea level of the single ocean basins show mixed long-term behavior.....On shorter timescales, but longer than the annual cycle, the basins sea level are dominated by oscillations with periods of about 50–75 years and of about 25 years."