For every pound of trawled shrimp, up to six pounds of "bycatch” is also captured, including turtles and dolphins.

Illegal fishing accounts for an estimated 11-26 million tons of the annual catch of fish globally.

Nine million tons of plastic ends up in the ocean every year, killing one million seabirds and 100,000 marine animals.

Humpback whales communicate with complex songs that can be as loud as the sound of a jet plane (around 150 decibels).