Sharks do not exactly have back bones, their skeletons are cartilaginous. And their weight is supported by the water in which they swim.
they float on their back
no
No just bull sharks.
No, bull sharks are not extinct, but they are threatened.
The water is simply too cold to support sharks, even the bull shark cannot survive for long.
Bull sharks need to live in water where it is warmer.
No, despite their name, bull sharks are free of horns.
they are called bull sharks because they are larger than most sharks and are notoriously aggressive.
Bull Sharks Are Gray Actually they are brown look it up on google images.
bull sharks have been known to use the bump and bite.
Because they have the name bull in it
there sharks.