On Monday the Spanish coastguard rescued three migrants stowed away on a ship that arrived in the Canary Islands from Nigeria.
A photograph showing the trio was distributed on Twitter by the coastguard.
They are seen sitting on the rudder of the oil and chemical tanker Althini II.
The vessel arrived in Las Palmas in Gran Canaria after an 11-day trip from Lagos, according to Marine Traffic.
The authorities confirmed that the migrants were taken into the port and attended to by health services.
The Canary Islands is a famous route for African migrants attempting to reach Europe.
