What is Coral Triangle and it’s significance

Corals :
76percent of the world’s coral reef species are found in the Coral Triangle
76% (605) of the world’s coral species (798) are found in the Coral Triangle, the highest coral diversity in the world. The epicenter of that coral diversity is found in the Bird’s Head Peninsula of Indonesian Papua, which hosts 574 species (95% of the Coral Triangle, and 72% of the world’s total). Within the Bird’s Head Peninsula, the Raja Ampat archipelago is the world’s coral diversity bull’s eye with 553 species.
The Coral Triangle has 15 regionally endemic coral species (species found nowhere else in the world), and shares 41 regional endemic species with Asia.