Tag Archives: environment

Konungs skuggsjá – by the pricking of my thumbs…(don’t) release the kraken!

Giant_octopus_attacks_ship 

There are certain varieties of whales in the seas of Iceland that may be eaten by men. One of these is called humpback; this fish is large and very dangerous to ships. It has a habit of striking at the vessel with its fins and of lying and floating just in front of the prow where sailors travel. Though the ship turns aside, the whale will continue to keep in front, so there is no choice but to sail upon it—but if a ship does sail upon it, the whale will throw the vessel and destroy all on board. Then there is a kind of whale called the rorqual, and this fish is the best of all for food. It is of a peaceful disposition and does not bother ships, though it may swim very close to them. Because of its quiet and peaceful behavior it often falls a prey to whale fishers. It is better for eating and smells better than any of the other fishes that we have talked about, though it is said to be very fat; it has no teeth. It has been asserted, too, that if one can get some of the sperm of this whale and be perfectly sure that it came from this sort and no other, it will be found a most effective remedy for eye troubles, leprosy, ague, headache, and for every other ill that afflicts mankind. Sperm from other whales also makes good medicine, though not so good as this sort.

Then there is one that is scarcely advisable to speak about, on account of its size, which to most men will seem incredible. There are, moreover, but very few who can tell anything definite about it, inasmuch as it is rarely seen by men—for it almost never approaches the shore or appears where fishermen can see it, and I doubt that this sort of fish is very plentiful in the sea. In our language it is usually called the kraken. I can say nothing definite as to its length, for on those occasions when men have seen it, it has appeared more like an island than a fish. Nor have I heard that one has ever been caught or found dead. It seems likely that there are but two in all the ocean and that these beget no offspring, for I believe it is always the same ones that appear. It is said that when these fishes want something to eat, they are in the habit of giving forth a violent belch, which brings up so much food that all sorts of fish in the neighborhood, both large and small, will rush up in the hope of getting nourishment and good fare. Meanwhile the monster keeps its mouth open, and inasmuch as its opening is about as wide as a sound or fjord, the fishes cannot help crowding in in great numbers. But as soon as its mouth and belly are full, the monster closes its mouth and thus catches and shuts in all the fishes that just previously had rushed in eagerly to seek food.

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Originally quoted in Lapham’s Quarterly, which says: From The King’s Mirror. Composed in Old Norse during King Hákon Hákonarson’s reign (1217-1263), this anonymous instructive work takes the form of a father-son dialog and may have been intended for the king’s sons. The kraken, a fabled sea monster of Scandinavian invention, may have originated with a rare sighting of a giant squid. In addition to the humpback variety, the text mentions Greenland right, horse, red-comb, and white whales.

For those in love with murmuration…

murmuration

Colossal says: “Filmmaker Neels Castillon was on a commercial shoot a few days ago, waiting to catch a helicopter flying into a sunset, when suddenly tens of thousands of starlings unexpectedly swarmed the sky in an enormous dance known as a murmuration. With his director of photography, Mathias Touzeris, the two filmed for several minutes capturing some pretty magnificent footage. You might recall a similar murmuration video from last year shot extremely up close and personal using a camera phone that went viral. How do thousands of birds simultaneously make such dramatic changes in their flight patterns? After tons of research, scientists still aren’t sure. The music is Hand-Made by Alt-J.”
 


 
Until recently, it was hard to say what made the murmurations possible. Scientists had to wait for the tools of high-powered video analysis and computational modeling. And when these were finally applied to starlings, they revealed patterns known less from biology than cutting-edge physics. As Brandon Keim puts it on Wired.com:
 

Starling flocks, it turns out, are best described with equations of “critical transitions” — systems that are poised to tip, to be almost instantly and completely transformed, like metals becoming magnetized or liquid turning to gas. Each starling in a flock is connected to every other. When a flock turns in unison, it’s a phase transition.

At the individual level, the rules guiding this are relatively simple. When a neighbor moves, so do you. Depending on the flock’s size and speed and its members’ flight physiologies, the large-scale pattern changes. What’s complicated, or at least unknown, is how criticality is created and maintained.

It’s easy for a starling to turn when its neighbor turns — but what physiological mechanisms allow it to happen almost simultaneously in two birds separated by hundreds of feet and hundreds of other birds? That remains to be discovered, and the implications extend beyond birds. Starlings may simply be the most visible and beautiful example of a biological criticality that also seems to operate in proteins and neurons, hinting at universal principles yet to be understood.