As per the recent studies, climate change has caused a change in the colour of 56 per cent of the world’s ocean.
It found that waters in the tropics, particularly the southern Indian Ocean, have turned green.
Green-coloured water indicates an increase in phytoplankton, microscopic plant-like organisms that are crucial for marine life and carbon dioxide absorption.
The researchers analysed data from the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua satellite.
It has been monitoring ocean colour for two decades.
They observed long-term trends and used models to simulate scenarios with and without greenhouse gas emissions.