Lava from an erupting volcano on Spain’s La Palma island has reached the Atlantic Ocean, raising fears of toxic gases being released and explosions.
Clouds of white steam were seen rising as a red-hot current made contact with the water in the Playa Nueva area.
This could trigger a chemical reaction that can irritate the skin and eyes and affect breathing.
Hundreds of homes have been destroyed since the Cumbre Vieja volcano in the Canary Islands erupted on 19 September.
About 6,000 people have been evacuated, as the lava was engulfing houses, schools and some banana plantations.
Residents told to stay indoors amid toxic gas fears as 1,000C lava reaches Atlantic Ocean
Scientists have warned of breathing difficulties and irritation to eyes and skin due to the chemical reaction caused by the lava from the Cumbre Vieja volcano reaching the sea.
The red-hot current has a temperature of more than 1,000C (1,832F) as it meets the ocean, which is around 20C (68F).
Along with warnings of toxic hydrochloric acid vapour being released into the atmosphere, officials in the Playa Nueva area also said there could be explosions.