Coast guard footage shows a diver slicing away some of the net in the waters surrounding the Aeolian Island archipelago.
People on boats had spotted the sperm whale struggling in the Tyrrhenian Sea off Italy’s west coast on Saturday and contacted the coast guard.
The operation to free the sperm whale was particularly difficult “due to its state of agitation” which did not allow for continual intervention, the coast guard said.
Three weeks ago, the Italian coast guard freed another sperm whale ensnared in a fishing net, also in the sea off the Aeolian Islands.
Since the start of the year, the coast guard has seized illegal fishing nets totalling more than a 100km (62 miles) in length.
The coast guard says it has stepped up its efforts this year to combat illegal fishing.
