New arrivals are down in July as the Italian navy ship Tremiti arrives in Tripoli to continue to provide training to the Libyan coast guard.
The number of migrants who reached Italy by sea was 11,459 in July 2017, according to UNHCR sea arrivals data, down from 23,524 in June.
The number is less than half the 23,522 who arrived in July 2016. Nigerian and Bangladeshi nationals still represent the largest groups among new arrivals.
More than 95,000 people, mainly from North, West and the Horn of Africa, as well as the Middle East and Central Asia, have arrived in Italy between January and July 2017, slightly more than during the same period in 2016.