Swordfish missing circle-shaped chunks of flesh hauled in by fishers. What bit it?

Fishers hauled in a swordfish (Xiphias gladius) covered in dozens of cookiecutter shark bites. (Image credit: Courtesy of TK Walker (screenshot from YouTube))

Fishers in Australia have hauled in a swordfish covered in dozens of strange, circular wounds following a shark "pack attack."

Tony "TK" Walker and his crew were fishing off the northeastern coast in the Coral Sea when they reeled in the large fish and soon identified the wounds as cookiecutter shark bites.