In countries where bleached flour is prohibited, plain flour can be treated in a microwave oven to produce similar chemical changes to the bleaching process.
In the 18th century several scientists developed varieties of chlorine bleach, including sodium hypochlorite and calcium hypochlorite (bleaching powder).
A cool upwelling from the deep bay is thought to provide natural resilience to coral bleaching and this may explain the unusually pristine coral habitat.
