Jellyfish are fascinating creatures that belong to the phylum Cnidaria. They are known for their gelatinous bodies and stinging tentacles.

While jellyfish do not have brains like humans or other vertebrates, they do have a simple nervous system that allows them to perceive their environment and respond to stimuli. This nerve net is spread throughout their body and helps them coordinate basic behaviors such as swimming and feeding.

In terms of eyes, jellyfish do not have complex eyes like those found in many other animals. Some species of jellyfish have...