What is suggested to be the biological secret allowing the frilled shark's body plan to persist for 80 million years?

Answer

A very low metabolic rate

Surviving in deep water where food is scarce suggests a very low metabolic rate, which is the biological secret that allowed this body plan to persist where surface dwellers faced pressure to become faster.

What is suggested to be the biological secret allowing the frilled shark's body plan to persist for 80 million years?

#Videos

Why This Shark Hasn't Changed in 80 Million Years - YouTube

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