Two more undersea volcanic eruptions have been identified off the coast of one of the Canary Islands making three in all.
Authorities have kept the island of El Hierro on high alert.
It began at the end of last month with a tremor of 3.4 magnitude prompting the evacuation of around 50 people.
Earlier this week after a stronger jolt, roads were closed, and up to 600 people were moved away from potential danger.
The first eruption was so deep it was not visible but the latest discoveries, at only 200 metres below the surface, are creating slicks of volcanic debris and a strong sulphurous smell.
The coastal town of La Restinga has been evacuated and the area around it remains on red alert in case the undersea eruptions move closer to land.