A skeleton composed primarily of cartilage rather than bone, characteristic of certain fish like sharks and rays.
From Greek chondros (cartilage) + English skeleton. The term combines Greek and English to describe the fundamental skeletal architecture of an entire animal group.
Sharks have chondroskeltons, which is why they're so flexible and can turn much faster than bony fish—their lighter, bendier skeleton gives them a hunting advantage that's lasted 400 million years.
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