Is this the oldest living creature in the ocean for 400 million years?
New York, October 28, 2020, Wednesday
According to physiology, sleep is usually related to the brain. When the brain is tired, its neurons bring sleep. However ancient sea creatures sleep despite the jellyfish brain. This particular organism develops neurons even though the brain and nervous system are not developed. Not only that, the special nervous system immediately converts the signals into action. Thus many species of jellyfish work without a mind.
Research from the California Institute of Biology also found that organisms that do not have a nervous system also need sleep. Jellyfish of the Cassiopa species are more common in the Pacific and Atlantic Oceans. Which is about 3.5 cm. It falls asleep on the beach. While its taticles are upwards. Jellyfish lie dormant at night.
Its night movement is 20% less than during the day. However, it only takes 2 seconds for him to wake up and become active. Jellyfish have 4% water in their body. The jellyfish feed on its body with the help of warp fibers. Jellyfish do not float but keep moving with the waves of the ocean. It produces a speed of 10 km per hour by compressing and inflating its body. Small jellyfish are preyed upon by turtles. Dinosaur fossils show that it is not more than 20 million years old, while jellyfish have lived in the ocean for the last 200 million years.
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