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Their graceful bodies are built for constant swimming and speed
3
Sharks’ skeletons are made of cartilage
A shark’s eyes are on the side of its head, and its mouth is on its underside
4
A shark’s body is covered with sharp, tooth-like scales
Sharks do not have a swim bladder, instead they have large livers
7
The oil in their livers is lighter than water
which helps the shark float
Different sharks have different kinds of teeth
8
Sharks that eat fish have sharp, triangular teeth to catch and hold
their slippery prey
Sharks that eat shellfish have broad, flat teeth to crush shells.
9
Sharks that eat fish have sharp, triangular teeth to catch and hold
their slippery prey
Sharks that eat shellfish have broad, flat teeth to crush shells
10
Some sharks have several rows of teeth which are replaced
every few weeks
Most sharks must swim all the time so they can use their gills to breathe
12
Sharks use their fins for steering and balance as they swim