INCOIS issues marine heat wave warning and swell surge alert
The research organisation warned that rising sea temperatures could impact coral reefs, marine productivity and coastal biodiversity across several ocean basins.
The Indian National Centre for Ocean Information Services (INCOIS), a research organisation under the Ministry of Earth Sciences (MoES), has issued a Marine Heat Wave (MHW) warning for the Arabian Sea, the Bay of Bengal and the Indian Ocean, according to The Hindu.
The warning includes 'Watch' and 'Alert' categories, where sea surface temperatures are recorded at as much as 1 degree Celsius higher than usual.
Scientists are currently assessing how these heat waves might affect fisheries, seaweed ecosystems, seagrass meadows and marine productivity.
The organisation stated that these warming conditions could lead to shifts in species distribution, biodiversity loss and long-term ecological changes related to climate change.
On Wednesday, November 4, 2026, INCOIS also issued a swell surge warning for the next two days covering the east and west coasts, including the Andaman and Nicobar Islands.
A danger alert was issued for Car Nicobar Island, while waves of at least one metre are expected to hit the coasts of Gujarat, Goa, Maharashtra, Karnataka, Kerala, Odisha, Andhra Pradesh, Lakshadweep, Puducherry, Tamil Nadu and West Bengal.