The answer would be water.
There are two sets of nerves in your skin. The first type are somatosensory neurons that send sensory information to your central nervous syste. The second set consists of autonomic fibers that control smooth muscle in the skin and the blood vessels in the skin.
Answer:
interesting
Explanation:
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They have to have a higher density than water to have the ability to stay on the sea floor. Otherwise they would just float to the surface of the water