Philippines: Tubbataha Reefs declared ‘area to be avoided’ March 17, 2017 sprep-pa The entire Tubbataha Reefs Natural Park (TRNP) has been declared as an “area to be avoided” (ATBA) by the International Maritime Organization (IMO). Please visit the link below ot read the full article. Read more about Philippines: Tubbataha Reefs declared ‘area to be avoided’