After drugs and arms trafficking, illegal fishing is the third most lucrative illegal activity in the world. It is estimated that around 26 million tons of fish and other marine resources are caught illegally every year to supply a black market worth up to $23 billion.

Illegal fishing takes many forms, one of which involves fishing inside marine protected areas that have been created to safeguard the biodiversity within them.

Communities across the U.S. saw at least 168 Confederate monuments, statues and other symbols removed from public spaces last year—71 of them in Virginia, the state with the most removals, according to a report from the Southern Poverty Law Center.

The group says more than 2,100 Confederate symbols are still publicly present in the U.S. and that 704 of them are monuments. The total figure includes government buildings, schools, streets and other public property named after people associated with the Confederacy.

Protecting the forests of Virunga National Park in eastern Democratic Republic of Congo - home to endangered mountain gorillas - could be described as one of the toughest jobs on the planet.

In the past 12 months, more than 20 of the park's staff have been murdered - and last week rebels were accused of killing the Italian ambassador to DR Congo, his security guard and driver in an attack within the park.