On patrol with Italy's Navy: What happens to migrants found at sea?

This video can not be played

To play this video you need to enable JavaScript in your browser.

The BBC's Matthew Price has been behind-the scenes on the Bergamini, part of the Italian navy's Mare Nostrum (Our Sea) operation, which patrols the seas in the search for migrant boats.

The frigate is under orders to save lives - whether boats are in trouble or not, they will try to intercept them and pick up the passengers.

Migrants are taken through a series of important steps once they are on board, including passing through a decontamination zone.