A whale conservationist happened across what he thought was a dead whale while out on a boat ride.
They got closer and found out the humpback whale was seriously tangled up in a fishing net.
So they immediately went to work cutting away the net even though the whale was struggling to get free and they only had one small knife.
When they finally got it free, the whale gave them a beautiful display of thanks.
U have to check it out in the above vid.