Other animals that survive without a brain include sea stars, sea cucumbers, sea urchins, sea anemones, sea anemones, squirting, sea sponges, corals, and Portuguese man-of-war. The brain is basically what happens when a large group of nerve cells, called neurons, form one large cluster. May 24, 2016
Which animal has no brain or heart?
Sea anemones Sea anemones do not have a brain or heart, but they do have a primitive nervous system that can maintain the balance of life in response to environmental stimuli.
Which fish has no brain or heart?
& gt;Jellyfish are incredible creatures – many surprises are different from creatures. Their bodies are made of 95% water and are free of bones and cartilage, heart and blood, and brain. Jellyfish have a very basic set of nerves at the base of the tentacles.
How do jellyfish live without a brain?
Jellyfish have a network of nerves instead of a single centralized brain. This "ring" nervous system is where neurons are concentrated and is a processing station for sensory and motor activity. These neurons send chemical signals to the muscles to contract and allow them to swim.
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