This document is an addendum to the Gray's Reef National Marine Sanctuary 2008 Condition Report. This addendum updates the 2008 Condition Report. The 17 questions found in the State section of the Condition Report have been revaluated for accuracy and completeness given new data sets, published literature, and expert opinion that have become available since 2008. For those that have new information to report (questions 1, 5, 6, 8, 9, 10, 12 and 14), new status and trend ratings, and updated narratives are provided. Trend ratings are generally based on observed changes in status since 2008.