Sea fireflies which turn Japanese beaches into a beautiful work of art.

The bright blue stripes that color the rocks just off the coast of Okayama beach, Japan, are not strange special effects, but very small luminescent living beings, called “sea fireflies” or, in Japanese, umi-hotaru. Scattered in the sands of shallow ocean water, these 3mm long tiny bioluminescent shrimp look like tiny blue gems washed up on shore. These small are able to emit a powerful light beam that can make the beaches and the Japanese sea a true multicolored spectacle: grouped together their natural light can be breathtaking. In 2015,…

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