Migrant tide

A rescue worker (R) checks migrants as they arrive on the boat "Nos Taurus Genova" at the Sicilian harbor of Pozzallo, Italy, February 16, 2015. REUTERS Alessandro Bianchi

Life jackets used by migrants are seen left on two flotsams at the Sicilian harbor of Pozzallo, Italy, February 16, 2015. REUTERS Alessandro Bianchi

A migrant waits to disembark from "Fiorillo" Coast Guard vessel as they arrive at the Porto Empedocle harbour, Italy, February 14, 2015. REUTERS/Antonio Parrinello

A child wears mittens as she arrives with her mother on the boat "Nos Taurus Genova" at the Sicilian harbor of Pozzallo, Italy, February 16, 2015. REUTERS Alessandro Bianchi

Migrants sit on the Italian Navy patrol ship Spica, as they arrive at the Sicilian harbour of Pozzallo, Italy, February 15, 2015. REUTERS/Antonio Parrinello

Migrants sits on the "Fiorillo" Coast Guard vessel as they arrive at the Porto Empedocle harbour, Italy, February 14, 2015. REUTERS/Antonio Parrinello

A shoe used by a migrant is pictured on a flotsam at the Sicilian harbor of Pozzallo, Italy, February 16, 2015. REUTERS Alessandro Bianchi

Migrants arrive by boat at the Sicilian harbour of Pozzallo, Italy, February 15, 2015. REUTERS/Antonio Parrinello

Migrants arrive at the Sicilian harbour of Pozzallo, Italy, February 15, 2015. REUTERS/Antonio Parrinello

Life jackets used by migrants are seen left on a flotsam at the Sicilian harbor of Pozzallo, Italy, February 16, 2015. REUTERS Alessandro Bianchi

Migrants arrive by boat at the Sicilian harbor of Pozzallo, Italy, February 16, 2015. REUTERS Alessandro Bianchi

Migrants stand on the "Fiorillo" Coast Guard vessel as they arrive at the Porto Empedocle harbour, Italy, February 14, 2015. REUTERS/Antonio Parrinello

Migrants (L) are photographed by Italian police after arriving by boat at the Sicilian harbour of Pozzallo, Italy, February 16, 2015. REUTERS Alessandro Bianchi

Migrants arrives by boat "Nos Taurus Genova" at the Sicilian harbor of Pozzallo, Italy, February 16, 2015. REUTERS Alessandro Bianchi

Migrants arrive by boat at the Sicilian harbour of Pozzallo, Italy, February 15, 2015. REUTERS/Antonio Parrinello

A migrant is helped by Red Cross assistants as he arrives at the Sicilian harbour of Pozzallo, Italy, February 15, 2015. REUTERS/Antonio Parrinello

Migrants arrive by boat at the Sicilian harbour of Pozzallo, Italy, February 15, 2015. REUTERS/Antonio Parrinello

A migrant (2nd R) is surrounded by Italian police, who were not wearing uniforms, after arriving by boat at the Sicilian harbour of Pozzallo, Italy, February 16, 2015. REUTERS/Alessandro Bianchi