On September 01, 1992, Tuvalu Post released the local FDC which have attached with the WWF stamp series of Blue Coral. Image of Blue Coral shown in the left side and has a post mark of logo WWF.
Blue coral or Heliopora coerulea is a coral and as the only species in the family Helioporidae and the only Octocoral known to produce a massive skeleton that formed of aragonite. Individual polyps live in tubes within the skeleton and are connected by a thin layer of tissue over the outside of the skeleton.
