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While diving off the southern coast of Japan, scuba diving photographer Yoji Ookata discovered rippling geometric sand patterns nearly six feet in diameter almost 80 feet below sea level. After returning with the crew from the nature program NHK, they discovered that the rings were actually being created by a small puffer fish, which uses the rings to pitch woo to potential mates and to protect the eggs (which are laid in the center) from ocean currents.

Read more at Spoon & Tamago. | Via



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