Many around the world closely followed the plight last week of five wealthy men who went missing aboard a Titanic-bound submersible. Meanwhile, researchers at the United Nations' International Organization for Migration (IOM) updated the number of migrants who have died trying to reach Europe by sea this year: nearly 2,000.
The number of people who lose their lives each year in the crossing is staggering, and this year is on track to be worse than the last. Here are some of the reasons why this year has become so deadly:
