NOAA has adjusted past temperatures to look colder than they were and recent temperatures to look warmer than they were.

Low survival from 2004 through 2006 led to a 25–50% decline in abundance. We hypothesize that low survival during this period resulted from (1) unfavorable ice conditions that limited access to prey during multiple seasons; and possibly, (2) low prey abundance. For reasons that are not clear, survival of adults and cubs began to improve in 2007 and abundance was comparatively stable from 2008 to 2010, with ~900 bears in 2010 (90% CI 606–1212). However, survival of subadult bears declined throughout the entire period. Reduced spatial and temporal availability of sea ice is expected to increasingly force population dynamics of polar bears as the climate continues to warm. However, in the short term, our findings suggest that factors other than sea ice can influence survival.

The reason all these people believe the Great Barrier Reef is dying is because they all get their fake news from the same green-left-liberal echo chamber

Or listen to honest experts like Professor Peter Ridd, a marine geophysicist from Australia’s James Cook University, who last year tried to blow the whistle on Great Barrier Reef fake news.