Mumbai: Several bystanders on Tuesday, witnessed a blue hue on the Juhu beach in Mumbai and Devgad beach in Sindhudurg along Maharashtra’s coastline.
This blue hue is also known as bioluminescence which is the production and emission of light by a living organism.
However, even if it looks beautiful to the eyes, high temperature, high quantity of organic material such as sewage and effluents and increased turbulence/wave action of the water could be the cause for this bioluminescence.
Coastal Conservation Foundation director, Shaunak Modi captured the bioluminescence on Wednesday night on Juhu Beach. “It is a recurring phenomenon, but a difficult one to capture on city beaches. One reason is light pollution on our beaches.”
Apart from man-made causes, the adverse impact of climate change leading to increased seawater temperature could be playing a major role in such a phenomenon.
This is common along the west coast since the year 2016. It has been observed across India’s coast as well as the coastline of many beaches in the world, for example, Maldives, Vietnam, Indonesia, USA, Australia, etc.
Similar to the blue tide, there exists another such phenomenon called red tide or harmful algal blooms that emits red light. It is rare occurrence caused when colonies of algae.