The only beach in Maharashtra that glows in the dark at night and 4 others across India that do too

Bioluminescent beaches in India offer a rare natural wonder, where the sea glows blue at night due to tiny organisms lighting up the waves.

Imagine walking barefoot on a beach at night, the waves gently brushing your feet and the shoreline glowing in shades of blue and green. It may sound like a scene from a fantasy film, but this phenomenon — known as bioluminescence — is a real natural wonder visible at select beaches in India.

The mesmerising glow occurs due to bioluminescent phytoplankton or dinoflagellates, microscopic marine organisms that emit light when disturbed by waves, footsteps, or motion in the water. This glow acts as their defence mechanism, producing an ethereal blue hue that transforms the coastline into a living galaxy.

Here are five beaches in India where the sea literally glows in the dark — including the only one in Maharashtra.

1. Palolem Beach, Maharashtra

On the Malvan coast of Maharashtra, Palolem Beach stands out as the only known beach in the state where visitors can witness this rare glow. As waves lap against the shore, the water sparkles with a faint bluish light, thanks to the presence of bioluminescent organisms. The sight is best experienced on moonless nights when the sea is calm and the sky is clear.

2. Radhanagar Beach, Havelock Island (Andaman and Nicobar Islands)
Known for its crystal-clear waters and pristine sand, Radhanagar Beach offers one of India’s most stunning bioluminescent displays. The surrounding waters shimmer in blue due to phytoplankton, especially when stirred by swimming or movement. Tourists are often advised to visit on moonless nights to enjoy the full brilliance of the phenomenon.

3. Betalbatim Beach, Goa

While Goa is famous for its nightlife and beaches, few know that Betalbatim Beach near Colva also glows under the stars. The soft luminescence here can be seen when waves crash or when visitors walk along the wet shoreline. It’s a serene experience, offering a magical contrast to the usual hustle of Goan nightlife.

4. Varkala Beach, Kerala

Kerala’s Varkala Beach, set against red cliffs and coconut palms, glows mysteriously after sunset on select nights. The glow is caused by marine microorganisms and adds to the beach’s already spiritual and scenic appeal.

5. Mandarmani Beach, West Bengal

Located in the East Midnapore district, Mandarmani Beach is another coastal stretch where the sea shimmers like a starry sky. The glow becomes visible when the tide is high and the waves crash onto the sand, releasing a sparkling effect in the dark.

While these glowing beaches are stunning, the phenomenon is delicate and seasonal. Factors like water temperature, pollution levels, and moonlight intensity affect visibility. Scientists also warn that excessive tourism and artificial lighting can disturb the natural ecosystem responsible for this glow.

Disclaimer: Bioluminescence is a natural occurrence influenced by weather, tide, and water quality. Visitors are advised to avoid disturbing marine life and to verify the best time for sightings from local authorities before planning their visit.