Excerpt from recent WaPo article:
Because the turtles spend years foraging at sea, it is difficult to measure population sizes and trends. So scientists from six major nesting sites in Japan, Hawaii, Australia, Costa Rica and Florida collaborated in an analysis of how many females had returned to lay eggs at their respective sites over the past 25 to 30 years.
Those numbers have steadily increased, at 4 to 14 percent per year, the team reports in the December online issue of the journal Global Ecology and Biogeography. Doing particularly well are the turtles that nest at the Archie Carr National Wildlife refuge on Florida's east coast: They were almost extinct in 1980 but their numbers have grown 14 percent per year since 1982.
Good news.