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"Many medical implants require hard materials that have to connect to or pass through soft body tissue, a mechanical mismatch that can lead to problems including a breakdown of the skin from abdominal feeding tubes or where wires pass through the chest to power heart pumps. Enter the squid.
The tip of a squid’s beak is harder than human teeth, but the base is as soft as the animal’s Jell-O-like body. In order to connect the two, a major part of the beak has a mechanical gradient that acts as a shock absorber so the animal can bite a fish with bone-crushing force, yet suffer no wear and tear on its fleshy mouth."
