In astonishing video footage, the crew of the Bahamas-registered Cheikh El Mokrani can be seen gesturing at each other on deck as the mammal writhes in the waters below.
After a moment’s consideration, one man hurls himself off 40-foot-high deck and lands just feet away from the giant mammal.
The crew member swims towards the whale and pushes its nose away from the net. He is soon joined by another man and together they push the fish free.
A cheer goes up...