The fluorescent beach in Maldives, also known as blue tears on the beach, has no fixed time and place, and it depends on luck. It only happens when plankton and temperature are right. Blue tears have broken out in Kuramati Island in Maldives, Tianque Island in Xi Du and Gulidu Island. The time when this happens depends on the annual temperature and climate change.

The principle of fluorescent beach The phenomenon of "fluorescent beach" is formed by luminous plankton and was discovered by WillHo during his honeymoon in Maldives. According to JorgeRibas, a marine biologist, the scientific name of these beautiful "spots" in Maldives is Lingulodinium polycephalum. There is also a luminous dinoflagellate, which is non-plant and non-animal, and is a single-celled microorganism similar to bacteria; They glow like fireflies when squeezed by external forces such as the beating of waves. The most famous luminous body in dinoflagellate can be considered as noctiluca scintillans. The name noctilucent comes from its luminous characteristics-when the surrounding seawater is stirred, it will emit blue light due to stimulation. When a large group of noctilucent insects are disturbed, a large blue light will appear on the sea surface, so it is also called "sea fire".