A migrant is helped to disembark in the Sicilian harbour of Pozzallo. About 100 migrants, including 28 children, were rescued on Sunday by a merchant vessel. Photograph- Alessandra Tarantino:AP

A migrant is helped to disembark in the Sicilian harbour of Pozzallo. About 100 migrants, including 28 children, were rescued on Sunday by a merchant vessel. Photograph- Alessandra Tarantino:AP

A migrant is helped to disembark in the Sicilian harbour of Pozzallo. About 100 migrants, including 28 children, were rescued on Sunday by a merchant vessel. Photograph- Alessandra Tarantino:AP

A migrant is helped to disembark in the Sicilian harbour of Pozzallo. About 100 migrants, including 28 children, were rescued on Sunday by a merchant vessel. Photograph- Alessandra Tarantino:AP

A survivor sleeps on the deck of the Italian coastguard vessel Bruno Gregoretti in the Maltese port of Senglea. Photograph- Ian Pace:Demotix:Corbis