Do Sea Urchins Feel Pain? 3 amazing facts about Nervous system

Thinking about sea urchins? An intriguing question came to mind “Do sea urchins feel pain?”. Well, sea urchins do not have pain receptors so they do not feel pain even if they are dying. unlike humans, sea urchins lack a central nervous system and brain. instead, they have a simple network of nerves that spread … Read more