Spain has saved 476 migrants in two days from small boats, as they tried to make the perilous crossing of the Mediterranean from Africa.
Spain's maritime rescue service said it pulled the migrants from 15 small boats on Friday and Saturday. There were no reported casualties.
Favorable weather in the Strait of Gibraltar appears to have sparked a surge in sea crossings.
Each year, tens of thousands of migrants attempt to reach Spain and other southern European countries by crossing the Mediterranean in smugglers' boats.
Most of the vessels are unfit for open water, and thousands of migrants drown each year.
The UN says 615 migrants have died crossing the Mediterranean so far this year.
A total of 22,439 migrants have reached European shores, with 4,409 arriving in Spain, through the first four months of 2018.