Greenland Sharks Have Skin Covered in Tiny Tooth-Like Denticles

This shark's skin feels like sandpaper under your hand.

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🤯 Did You Know (click to read)

Denticles are structurally similar to teeth and composed of dentin.

Like other sharks, Greenland sharks are covered in dermal denticles, microscopic tooth-like scales that reduce drag and protect against abrasion.

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💥 Impact (click to read)

Over centuries of life in rocky Arctic environments, these denticles provide armor against scraping ice, prey struggles, and environmental contact.

The durability of this living armor contributes to their ability to survive multi-century lifespans in some of the harshest marine habitats on Earth.

Source

NOAA Ocean Exploration

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