The light comes from female firefly squid, which spawn in spring, then die and wash ashore, their tentacles lit like millions of aquamarine LEDs.

这种光来自雌性萤火虫鱿鱼，它们在春天产卵，死后，被冲上海岸。它们的触须像数百万碧绿色LED灯似地闪亮。

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Like much of the marine life in Japan, firefly squid are commercially fished and eaten as a seasonal delicacy.

BBC: Japan��s mysterious glowing squid

His firefly squid sashimi and carpaccio were tasty (and less squishy than the whole squid), but the standouts were the luscious beni-zuwaigani (red queen crab), velvety shiroebi (white shrimp), maiwashi (sardine), mejimaguro, (fatty tuna), and as a bonus, a bit of uni (sea urchin), imported from Hokkaido but as good as anything local.

BBC: Japan��s mysterious glowing squid