According to Odditycentral, every year between March and June, the 14-km shoreline of Toyama Bay in Japan is engulfed in the twinkling blue light. The fascinating lights are not man-made, but is a natural phenomenon created by thousands of bioluminescent cephalopods commonly known by the name of“Glowing Firefly Squids”.

Normally with a length of around three inches, firefly squids are covered with photophores on the tips of their tentacles and around their eyes. Photophores contain light-producing chemicals. Firefly squids spend most of their life near the ocean floor. Every year around March to June, they will come to the surface to fertilize and drop eggs on the shoreline at night.

The world’s only museum dedicated to the firefly squid is Hotaru Ika museum at Namerikawa fishing port. Sightseeing tours and exhibitions attract tourists around the world to pay a visit.