Mar
24

How is the narwhal’s tusk like a human tooth?

How is the narwhal’s tusk like a human tooth?

The narwhal tusk is the opposite of a human tooth, rigid in the center and surrounded by a flexible outer layer containing porous tubules. Scientists have long realized the signals a narwhal receives from the nerves in its spiral tusk—which is actually a wildly elongated tooth—provide critical information about its icy ocean environment. Dentist to… Continue reading How is the narwhal’s tusk like a human tooth?

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