In summer and autumn, boating on the sea, in the calm blue waves, you will often see crystal clear, covered with light veils, like a parachute zooplankton, this is the jellyfish. Chen Zangqi of the Tang Dynasty described in the "Materia Medica Collection": "The big one is like a bed, the small one is like a bucket, there is no eye, the stomach and stomach are eye-catching, the shrimp is the eye, and the shrimp moves the snake." ”
Although jellyfish do not have ears and eyes, both jellyfish and pomfrets volunteer to be its "eyes and ears". Whenever the enemy approached, the small fish and shrimp living around the mouth and wrist of the jellyfish immediately became aware of it and quickly hid in the jellyfish "home", and the jellyfish felt the action of these small animals and immediately contracted the umbrella and sank into the sea. Jellyfish shelter small fish and shrimp, and small fish and shrimp are also willing to "stand guard and put up sentry" for it, which is what Chen Zangqi said about "shrimp as the eye".
Jellyfish have a special ability to predict whenever a storm comes at sea. It turns out that jellyfish can turn infrasound waves caused by distant air rubbing against waves into electrical pulses to cause sensations. Whenever it receives a signal, it dives into the depths early, so as not to be swept up by the waves on the rocks and crushed to pieces. Scientists have solved the mystery of jellyfish predicting storms, and have been inspired to design a sensitive storm alarm , jellyfish ears , to accurately predict the arrival of storms at sea. People who often work at sea also predict storms based on the whereabouts of jellyfish.
