The idyllic coral reefs/reefs/underwater havens of the Maldives are facing a grave/serious/dire threat/danger/risk from an invasive species/plant/weed known as Caulerpa taxifolia/Halodule uninervis/Sargassum muticum. This aggressive/invasive/prolific plant, native to the Indo-Pacific region, has been found/spotted/detected in several locations/area