NC - What are those dark chunks washing up on Outer Banks? Pieces of the past, experts say

The latest mystery to wash up on North Carolina’s Outer Banks came Tuesday in the form of something resembling a big, black shark’s tooth.

It was made of something like clay — but was fibrous in texture.

Vacationer Sally Craig Wilson of Pittsburgh, Pennsylvania, was the first to notice the odd discovery and shared a photo on Facebook with a simple question: “What are these large mud like things on the beach?”

At least a dozen were spread across a beach on Pea Island and came in different sizes and shapes, Wilson said.

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