Multiple choice

How many bones do sharks have in their bodies?

  1. 50

  2. 246

  3. 89

  4. 0
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sharks have zero bones - their skeletons are made entirely of cartilage, which is lighter and more flexible than bone. This cartilaginous skeleton allows sharks to be more agile swimmers and is a defining characteristic of all cartilaginous fish (class Chondrichthyes).

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