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It’s possible that I made a few economic missteps over the years (although, judging by the news, I am not the only one) and, as a consequence, I won’t be spending this August traveling the world. However, even if I am literally trapped in angry sweltering New York, my mind is free to roam the rugged Carpathians and take in the robust forested splendor of Romania. This land was long known as Transylvania (the “crossing forest”) and the modern world has not changed the wooded character of the land. I started to do some research online and in my virtual travels I was stunned to come upon this colossal stone head carved in the living rock of Dacia. This is a carving of Decebalus a king who ruled from 87 AD – 106 AD. Decebalus was a client king of Rome, one of the many annoying and interesting minor sovereigns whom the empire propped up around its borders to act as buffers. Much of Roman history concerns their perennial struggles with these vexatious vassals and the history of Decebalus is no different. Indeed he ended up being the last king of Dacia. His cleverness and pride went too far and Rome crushed him like a bug and absorbed Dacia.
This statue however is presumably meant to evoke Decebalus’ pride and independence (not his defeat and suicide). The head is 40 meters tall (120 feet)—it may be the largest monumental head in Europe. It was crafted by a team of 12 sculptors over 10 years at the behest of an eccentric Romanian businessman, Constantin Drăgan (1917-2008). The statue was completed in 2004 and stares balefully out over the Danube. I love Decebalus’ stony features—which seem little different from an actual rock. I am also predictably impressed at the way the natural rock looks like a crown. Dragan had some curious nationalistic misconceptions about Dacia’s place in history, and it seems this great head was meant to explain/popularize some of the millionaire’s ideas. As often happens with art, the actual work is more ambiguous and interesting…hinting at both greatness and ruin.
The Cranchiidae are a family of squid commonly known as “glass squid” which live in oceans around the world. The squid are of no interest to commercial fisheries (yet) and a great deal about this family remains completely unknown. Most of the 60 known species of cranchiidae are small and inconspicuous–indeed the majority are transparent and thus nearly invisible. However the largest known mollusk, the colossal squid (Mesonychoteuthis hamiltoni), is part of the family, (so it might be wise not to antagonize them on the playground).
Glass squid are notable for having stubby swollen-looking bodies and short arms except for one long pair of hunting tentacles. The majority of glass squid have bioluminescent organs which they use to hunt, to communicate and to disguise the faint shadows cast by their transparent bodies (predators of the deep can see even the faintest shadows cast by the dim light from the surface). The cranchiid squids themselves sport a variety of interesting and complex eyes which range from giant circular eyes to stalked eyes to telescoping eyes. This little gallery shows how delicate, diverse, and beautiful (and how utterly alien) these squid can be.
Juvenile cranchiid squid are part of the plankton and live near the surface where they hunt microscopic prey while trying to avoid thousands of sorts of predators. As they mature, they change shape and descend to deeper waters—indeed some species become practically benthic and can be found more than 2 kilometeres under the ocean. Glass squid move up and down the water column by means of a fluid filled chamber which contains an ammonia solution (which maybe explains why they are not on the human menu yet).
The great Southern Ocean which swirls in a clockwise circle around Antarctica is home to many of the Earth’s largest animals. Blue whales come here to gorge on vast schools of krill. Among the icebergs and the towering waves, southern elephant seals (the largest member of the order Carnivora) fight duels to build their harems, and highly intelligent killer whales hunt together in pods. There are populations of sperm whales living in the Southern ocean as well and these leviathans dive to the cold floor of the world hunting for the world’s largest mollusk, a huge cephalopod which can only be found in the Southern Ocean. In fact this bizarre creature, the colossal squid (Mesonychoteuthis hamiltoni) is also the world’s largest invertebrate. Also known as the Antarctic squid or the giant cranch squid, the colossal squid lives in the abyssal depths. Unlike other squid, the colossal squid does not have tentacles–its powerful arms are studded with sharp hooks (much like the long-extinct belemnites). Some of these hooks swivel while others have three barbs in the manner of a fish spear.
The measurements of the colossal squid are staggering. Its eye alone (the largest of any known creature) measures 27 centimetres (11 in). A fully grown adult squid is estimated to be 12–15 metres (39–49ft) long. Although giant squid have longer tentacles, the colossal squid a long stout mantles and are thus much more massive. Their upper weight limits are unknown but are well over 500 kg (+1000 lbs).
The colossal squid is believed to be an ambush predator, which lurks in the depths waiting for chaetognatha, other squid, and benthic fish (such as the Patagonian toothfish) to pounce upon. It is hypothesized that they have a slow metabolism and do no need great reserves of food (unlike the energetic endothermic sperm whales which prey on them). The colossal squid are believed to be sexually dimorphic—the females become much larger than the males.
There is a reason that so much of this article is couched in ambivalent language such as “estimated”, “believed” and “probably”: colossal squid live in an environment where humankind can barely venture. The colossal squid are fast enough and clever enough to usually evade our nets, lines, and traps (although fishermen trying to catch Patagonian toothfish hooked a 450 kg (990 lb) specimen which was about 39 feet (13 m) long). Additionally our submarines and submersible robots are too slow and noticeable too stalk the squid in the abyssal depths. Other ocean creatures do not suffer from the same problem. Juvenile colossal squid are eaten by beaked whales, elephant seals, sharks, toothfish, and even albatrosses, however the adult squid are so large that only massive sleeper sharks and giant sperm whales can threaten them. Sperm whales are often covered with scars from their battles with the giants but the whales easily have the upper hand. Sperm whale stomachs have been found filled with hooks and beaks (which coincidentally were much larger than those found on the largest squid specimens recovered by humans to date).