MARUSHIN Glow Sabiki [Green] 6-1

Ami shrimp, which is eaten by horse mackerel, is said to be a kind of animal plankton, and it preys on phytoplankton. For phytoplankton, for photosynthesis,
They gather in the light, and for that reason, horse mackerel also gathers in the light.

Therefore, at the point where the light does not illuminate the sea surface, such as night light, this night light is the time of the night light!