In a finding that could help in better understanding the future global climate scenario, scientists have found evidence that waters from the Persian Gulf and the Red Sea make their way into the Bay of Bengal. While signals of the presence of Persian Gulf water was found at the depth range of 200 to 400 metres in the Bay, that of Red Sea water was found at depths between 500 and 1000 metres. Researchers have also found that the waters of the marginal seas bordering the Arabian Sea are transported into the Bay by the Summer Monsoon Current, which is seen to be a deep current extending to a depth of around 1 km. The waters were traced all over the Bay including the Andaman Sea. The findings are significant as deep circulations of the oceans are key elements of the global climate system and are invoked in the context of both past climate and climate change studies. An ocean’s circulation, which is the circulation of its water mass, affects the movement of other properties such as hea