How Large Was The Largest Giant Squid Ever Found?

The largest one examined was found in Lyall Bay, New Zealand, and measured fifty-seven feet long. But only twelve different species of these giants have been classified, and it is possible that other larger ones may exist. In fact, some evidence suggests this.
For example, sperm whales live almost exclusively on squids, from the smaller species to the giants. Many of these huge whales weighing fifty tons have deep cuts from encounters with the giant squid. Often their skin is pocked with circular scars measuring from two and a half to four inches across. These were apparently inflicted by the suckers on the squid's tentacles during wild undersea battles, as these scars are approximately the size of the sucker disks on a fifty-foot squid.
But if sucker size is proportionate to the size of the squid, then the oceans may contain some truly enormous giants. This is because some of these scars measure eighteen inches in diameter! By comparison, a squid with eighteen-inch suckers would be about two hundred feet long. The existence of such gigantic squids has never been confirmed, and it is true that these large scars may have been the result of the suckers stretching the supple skin of the whale. However, a travel writer of the nineteenth century claimed to have seen a squid tentacle that was as thick as a man's body and with suckers the size of a saucer.

47 feet