Walking by the river t'other evening, the twilight disclosed all manner of plastic bags floating by in the water. Seeing crap drifting downriver (not literal crap, mind you) is not unusual. Mostly the usual suspects: the aforementioned plastic bags, empty food containers, wood chips, bottles and cans, and clap your hands.
Despite this, even by the time it empties into Tokyo Bay, Sumida River merely looks unsightly compared to some rivers elsewhere. The Mississippi is pretty funky when it gets to Louisiana... and not Bootsy Collins funky, either. Glow-in-the-dark, scratch-and-sniff biohazard funky. とにかく、隅田川で泳ぐつもりない。
But back to the Sumida: having an eyeful of a bunch of discarded plastic bags of an evening... saw one of them twitch. Paused to rub the peepers. Looked again and found that all of the plastic bags were intermittently moving or pulsating or undulating. Ew... hate that last word. Of course these were not plastic bags, but jellyfish. (Probably aurelia aurita to be precise).
Everything has its season, of course. When jellyfish appear in large quantities, scientists refer to it as a "bloom". Jellyfish blooms present a problem here and there. The phenomenon can have disastrous effects for some. A bloom of Nomura's jellyfish or 越前水母 (エチゼンクラゲ) managed to capsize a fishing trawler when a group (school? wiggle? flotilla? jar? dunno...) of them ended up in the boat's net. Surprised? It's less surprising upon learning this critter can grow to two meters in diameter with a mass of two hundred kilos. Zoiks.
Anyway these otherworldly blobs are mighty interesting. Wikipedia ho!
この不思議な塊は興味深いだな。ウィキペディアに行こう!
Status updaticus: a group of jellyfish is most precisely referred to as a "smack".
What the hell? Who makes this stuff up?