Walrus Evolution
Walrus Evolution
Where did the walrus that we know so
well today come from? There are some clues that we have
uncovered but still plenty that is uncertain. It is believed
based upon DNA testing on some early fossils that the walrus is
related to early forms of bears. They are also very closely
related to seals. The differentiating characteristic is that
the walrus grows tusks and seals don’t. Another animal that the
walrus could be related to is the Saber Tooth Tiger. This is
based on the fact that their tusks and their jaws are so
similar.
The early evolution process for the walrus almost didn’t
matter because by the 1930’s it was almost extinct. It took
almost 50 years of them struggling to evolve with their
environment as well as human interactions for them to bring the
numbers up high enough for us to believe they would
survive.
The truth is that we don’t know too much about the evolution
process of the walrus. A great deal of it is nothing but
speculation. While some fossils have been found, not nearly
enough to give us all of the answers we are looking for. That
is why the evolution process of the walrus continues to be one
that is highly debated. As many focus their attention on the
future of them, others are committed to the challenge of
finding out what really took place.
The exact time frame of when the walrus evolved really
isn’t’ known. It is believed that they walked the Earth though
in some format around the same time as the dinosaurs. There is
only one species of walrus known. Yet many experts believe that
there were once more but the others didn’t evolve enough for
survival. Only time will tell if those theories are accurate or
not.
The fact that scientists believe the walrus once walked on
land is surprising to many. When they look at it, they just
can’t imagine such a creature being able to fully move around
on land. It is believed that they survived on plant life while
on land and that they were very large. Yet as the food sources
became scarce they turned to the water to be able to
survive.
A big part of the evolution process for the walrus involves
their appendages changing into flippers. These flippers allow
them to move around in the water with ease in spite of their
larger size. The back flipper still has many elements of the
earlier times. This include five digits and the ability to
grasp.
So why did the walrus go to the water permanently at that
time? The easily could have got food and then went back to the
land. Research indicates it was due to the very hot
temperatures on land. The walrus needed to be in the bodies of
water in order to cool down their bodies. When the Ice Age
emerged, they were able to evolve enough to live in the very
coldest of areas.
The fact that the walrus has been able to evolve in order to
survive for millions of years is fascinating. It goes to show
that this is a very strong type of animal as well as one that
is highly intelligent. Today they continue to evolve in many
ways. For example they are doing their very best to be able to
survive in warmer temperatures due mainly to the problem of
global warming.
Right now the future looks good for the walrus as long as
efforts continue to stop global warming. They have high enough
numbers with about 250,000 of them on Earth to ensure they will
be around for many more centuries. However, the goal should be
well beyond that. By protecting their natural environment and
learning all we can about them we can help ensure that their
early evolution process wasn’t in vain.
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