Small putterfishes, believed to be the second most poisonous in the world, make ornate circles on the sea floor off Japan. In 1995 divers discovered strange circular patterns on the ocean floor. Later studies revealed that it was the putterfishes that flapped their fins to disrupt the sediments, thereby creating amazing and beautiful patterns on the floor. The edges of the circles have radially aligned ridges and valleys. The males decorate the ridges with fragments of shells, making it a piece of beauty. According to The Huffington Post, the female counterparts choose to mate only if they are satisfied with the patterns. And why are the criteria so artistic The females lay eggs only in the finest of sediments at the centre of the circles. The females leave and the males stay for the next six days to guard the eggs. The Huffington Post reported, “A fluid dynamics test, using a half size model, found that the upstream portion of the circle funnels water and fine sediments toward the centre. The downstream peaks and valleys funnel the water outward. The speed of water slowed by nearly 25 per cent in the centre, where the eggs are laid.”
