Moskito said about 20 crab-pot ropes, which are 240 feet long with weights every 60 feet, were wrapped around the animal. Rope was wrapped at least four times around the tail, the back and the left front flipper, and there was a line in the whale's mouth.

The crab pot lines were cinched so tight, Moskito said, that the rope was digging into the animal's blubber and leaving visible cuts.

At least 12 crab traps, weighing 90 pounds each, hung off the whale, the divers said. The combined weight was pulling the whale downward, forcing it to struggle mightily to keep its blow- hole out of the water.

Moskito and three other divers spent about an hour cutting the ropes with a special curved knife. The whale floated passively in the water the whole time, he said, giving off a strange kind of vibration.

"When I was cutting the line going through the mouth, its eye was there winking at me, watching me," Moskito said. "It was an epic moment of my life."

When the whale realized it was free, it began swimming around in circles, according to the rescuers. Moskito said it swam to each diver, nuzzled him and then swam to the next one.

"It seemed kind of affectionate, like a dog that's happy to see you,'' Moskito said. "I never felt threatened. It was an amazing, unbelievable experience."