In some form, sharks have been
around for about 400 million years
Even before dinosaurs roamed the
earth, sharks hunted through the
oceans! They're such good
survivors that they've had little
need to evolve in the last 150 million
years
Great
white sharks grow about 10 inches
per year. Great whites can grow
to mature lengths of 12 to 14 feet.
New teeth are constantly being
formed in rows in a shark's jaw.
Shark's teeth are normally replaced
every eight days.
Some species of sharks can shed
as many as 30,000 teeth in their
lifetime.
Whale sharks have approximately
300 rows of teeth, with hundreds
of tiny teeth in each row.
For
more information visit: www.Elasmo-Research.org