Saturday/ the Greenland shark

This article¬†about Greenland sharks is fascinating. ¬†Sharks don’t have bones for carbon dating, so a research team used a protein in the shark’s eye to determine that these sharks easily reach 200 years in age, and some that are almost¬†400 years old have been found. They only reach reproductive age at an estimated 156 years!

Picture by Julius Nielsen, from the on-line article on

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