The coral reefs found offshore of St. Thomas and St. John are distributed patchily around the islands.
[2] More specifically based on a survey from 2001-2006, listed are a total of 215 fishes from St. John and 202 from St.
[4] The coral reefs are impacted by freshwater environments from the Amazon and Orinoco River in the form of anticyclonic rings which are rich in nutrients.
There is black-band disease which infects major coral reefs such as Montastraea annularis.
[4] The branching acroporid have been influenced the most by elevated sea temperatures that lead to bleaching and mortality.