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Low-oxygen zones in oceans expanding, including off India’s coast

Low oxygen zones, where marine life struggles to survive, are expanding in the Arabian Sea and Bay of Bengal, a new global study has found. Declining oxygen in seawaters is a worldwide phenomenon and has been driven in the past 50 years by human activities like polluting and warming of oceans.

“Low oxygen areas, which are normally present throughout the N. Arabian Sea and Bay of Bengal, are expanding over the last half century. This can affect fisheries, livelihoods and the biogeochemical cycles of the oceans,” Lisa Levin, a co-author of the study that was published in the journal Science, said.

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