The Philippines' Taal Volcano expelled clouds of gas as low-level seismic activity continued today.

Footage shows a plume of fumes drifting from the volcano's crater as fishermen stood watch across the Taal Lake in Batangas province on June 12.

The Philippine Institute of Volcanology and Seismology on Monday said it detected seven volcanic tremors over 24 hours. Alert Level 1 is still hoisted over the volcano.

Speaking to local media, PHIVOLCS director Dr. Teresito Bacolcol said: 'We remind residents to limit their outdoor activities as much as possible. They have to wear masks if they go outside.

'As of now, Taal Volcano is still under Alert Level 1. It might lead to a volcanic eruption, but it might not. Under Alert Level 1, there is the possibility of a sudden explosion - steam or phreatic explosion. That's why we are closely monitoring the volcano.'

According to PHIVOLCS, Alert Level 1 indicates 'low level of volcanic unrest'. It warned there may be steam-driven or gas-driven explosions, volcanic earthquakes, minor ashfall, and lethal accumulations or expulsions of volcanic gas.