The Enigma
Coral reefs are prime examples of thriving diversity, none more than the Coral Triangle, which is located in the ocean surrounding the archipelagos of the Philippines and other islands above Australia, pictured in the orange area of Figure 1. For hundreds of years, the Coral Triangle has fascinated scientists. This area contains more species of corals than any other area in the world, but scientists do not know how so many corals came to occupy the Coral Triangle. Recently, a group of scientists led by Danwei Huang came together to investigate four hypotheses on diversity in hopes to find which one is most accurate with regard to the corals of the region.
![A map of the area north of Australia where the Coral Triangle is located, along with ecologically relevant and similar areas.](https://evolve.community.uaf.edu/wp-content/uploads/sites/539/2018/04/evo13402-fig-0001-e1523486089485.png)