Shark Fact #1: Sharks are an old
have been around long before the first upright human
ancestors ever walked the earth. The shark species is so old
that their ancestors are older than dinosaurs. It is
estimated that the first shark classes were already in the
sea 300-400 million years ago. Although the first two oldest
branches of the ancestors of sharks no longer exist, they
are considered directly related to modern sharks.
Incidentally, some modern sharks continue to carry similar
traits and features to their ancestors. Some modern sharks
live for a very long time up to a maximum of a full century.
Shark Fact #2: Sharks don’t have bones.
lists of sharks facts will not tell you that sharks don’t
have bones. They do however have cartilage which is sturdy
enough to support body structures. At the same time though,
cartilage is an ideal support structure for sharks because
the lightness of cartilage helps keep them afloat. It is
important to note though that cartilage alone is not light
enough to keep sharks floating when they are still. They
will sink when they don’t move especially since they do not
have swim bladders. Sharks have to keep swimming to keep
Shark Fact #3: Young sharks are very
the most interesting sharks facts concern their young.
Unlike other animals and humans, shark parents do not take
pains at caring for their young. Baby sharks are not given
food or shelter when they are born. This seems to be alright
though because young sharks are born with the ability to
fend for themselves. Shark mothers also have no real cause
to worry. Sharks, whether adults or not, are on top of the
aquatic food chain. Baby sharks would therefore be safe from
attacks or aggression.
Shark Fact #4: Sharks aren’t as
dangerous as people imagine.
surprising of all sharks facts is that they are not the
cruel aggressors that humans imagine them to be. Although
there truly are some dangerous shark types, majority of
sharks only attack humans when they are threatened. It is
estimated that only 10% of shark attacks throughout the
world are fatal. The truth is that sharks are even more at
risk of dying or getting injured because of humans. Close to
a hundred million sharks are killed annually by humans.
Shark deaths and injury are primarily due to human hunting
for food and medication. There are also some sharks that are
killed for pure sport and amusement.
Shark Fact #5: Sharks are very healthy.
have great immune systems. They have tiny antibodies and
readily accessible immune system cells that aggressively
fight off illness. At one point it was even believed that
sharks do not get cancer. It has since been proven though
that some sharks do grow tumors. Other experts continue to
argue though that shark tumors do not develop as rapidly as
human tumors do.
These are only some of
the amazing sharks facts you might
have not known about. These top five facts however should be
enough to give you a different perspective about