Ten Sensational Squids: Giant Squid (#1)
Architeuthis "princeps" Modified from Verrill, 1879
At long last, we come to the end of my countdown of Ten Sensational Squids, a close-up look at a few of my favorite Teuthids. The top spot belongs, of course, to the rock star of the squid world, the darling of cryptozoology, and the species that got me started on this whole cephalopod obsession in the first place, the one, the only, the Giant Squid!
1. Architeuthis dux (Giant Squid)
First officially recognized by science in 1857, the Giant Squid was considered for more than a century to be the world’s largest Invertebrate (both in length and mass), a title that now appears to belong instead to the Antarctic species Mesonychoteuthis hamiltoni, the Colossal Squid. However, this claim is not universally accepted, and some researchers still ascribe to Architeuthis a maximum total length of 18 meters…nearly 60 feet! The more conservative estimate, and one that has become commonly accepted in recent years, is that female Giant Squid max out at a mantle length of 2.25 m (a little over 7 ft) with a total length of 13 m (~43 ft), which falls just short of the estimated 14 m Colossal Squid. (Male Architeuthis, at a mere 10 m, are a bit smaller than their mates.)
So, what is the source of this size disparity? It all seems to go back to a single specimen which washed ashore at Thimble Trickle Bay, Newfoundland on November 2, 1877 (unless it was Nov 8, 1879). This particular squid was reported to have had 35 foot tentacles and a mantle and head which together measured an astounding 20 feet long! This means that just the body of this monster would have exceeded the total length of most Architeuthis specimens known to modern science! For comparison, the largest Giant Squid currently on display is an 8.62 m (28.3 ft) specimen caught off the Falkland Islands in 2004. Based on current data and the fact that the elastic nature of squid tissues (particularly their feeding tentacles) makes them notoriously difficult to measure accurately, the veracity of this 130 year old report is highly suspect.
There are several other unverified reports of similarly sized Giant Squids from the later part of the Eighteenth Century, and the cryptozoological literature contains accounts of even bigger squids. Could it be possible that 60 ft (or greater) Giant Squid actually do exist, lurking undetected in the ocean depths? Of course! In fact, that would be sweet as hell. However, the facts as we know them just don’t quite support such a claim. For further reading on this, I highly recommend you check out Cameron McCormick’s (aka, The Lord Geekington) pair of excellent articles that explore this issue in more depth.
Speaking of recommended reading, The Search For the Giant Squid: The Biology and Mythology of the World’s Most Elusive Sea Creature (Penguin, 1999) by Richard Ellis is still, despite being over ten years old at this point, the definitive guide to the history of humanity’s relationship with Architeuthis.
Bonavista Bay, Newfoundland specimen, circa 1981 (photo by derekkeats, from Flickr)
So now that we’ve tackled the size issue, what else to we know about the Giant Squid? They have long, narrow mantles, small ovoid fins, and huge eyes. Their arms and tentacles are lined with serrated suction cups. In life, they are a deep red color, but this is generally not retained in recovered specimens. Architeuthis is found world wide at depths of 300-1000 m (~984-3,280 ft). There may only be a single global species, A. dux, or possibly three, based on geographic distribution: A. dux (Atlantic), A. martensi (North Pacific), and A. sanctipauli (Southern). Wikipedia lists an additional five nominal species, and as many as 20 different species have been named over the years (many named from single, badly damaged specimens). They are predatory, feeding on fish and other, smaller squid, and, in turn, they themselves are preyed upon by Sperm Whales. If one assumes that Giant Squid make up a significant percentage of the whales’ diet, it would seem that are actually quite common, despite their uncanny ability to evade human detection. Because they are so seldom seen, however, little else is known about their behavior.
Melbourne Aquarium specimen, photo by Fir0002 (from Wikipedia)
Nearly all known Architeuthis specimens have been found either in the stomachs of Sperm Whales, washed up on shore, floating dead on the surface, or accidentally caught by deep-sea trawling. Sadly, none of these scenarios are kind to delicate soft tissues, and consequently, most specimens on display around the world are in pretty rough shape. The first photographs of a living adult Giant Squid were taken in 2002 on Goshiki Beach, Japan (the 13 ft individual was found at the surface and died soon after). It wouldn’t be until 2004 that a living Giant Squid was photographed in its natural habitat. Japanese researchers were able to lure a 26 ft Architeuthis to a baited line at a depth of 3,000 ft off Japan’s Ogasawara Islands. They took 500 pictures over the course of four hours, and you can see some of them at NationalGeographic.com. In 2006, the same research team filmed video of a live Giant Squid for the first time. Again using a baited line, the squid, an 11 ft female, was brought to the surface, as seen in this segment from Japanese television.
In October of last year (as reported right here on ISK), a professional underwater photographer captured the first pictures of Sperm Whales in the act of eating a Giant Squid. (You can see some of these amazing photos here.) This took place, yet again, in the waters off the Ogasawara Islands, further proving that Japan is the new center of modern Architeuthis research. Maybe one day soon someone will finally get footage of the legendary battle that is thought to take place when a hungry Sperm Whale sets his sights on an unsuspecting Giant Squid. This encounter has likely been mythologized, but it is mysteries like this, still unknown after nearly two centuries, that have helped make Architeuthis such a fixture in popular culture. Clearly, it is one of the Most Awesome Animals Ever.
Tags: architeuthis, giant squid, science!, Ten Sensational Squids, video
