Yes, you read that correctly — 200 TONS worth of dead sardines. That's how many fish are believed to have washed ashore in Japan's Isumi City since June 3rd.
Even more disconcerting? Nobody's really sure what's causing the massive die-off. Some outlets are reporting that the fish died due to lack of oxygen; but while large schools of sardines are known to migrate in coastal waters, what could possibly suffocate 200 tons of fish remains a mystery.