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What animals don't have brains?

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Instead of having a brain, some animals have clusters of nerve cells called ganglia to help direct traffic in their bodies. But amazingly, most of the animals on this list don’t even have ganglia to help them out. When it comes to doing what they need to do to survive, these animals don’t give it a second thought. read more

Yes, there are many. Corals and jellyfish (Cnidarians) are just two animals that have no brain. In addition, the echinoderms (starfish, sea urchins, sand dollars, etc.) as well. read more

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