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Nobody
knows why there is an increase in the number of mammals becoming
stranded. One theory is that the mammals rely heavily on hearing.
They search for food by hearing. Parasites or infections can cause
hearing difficulties. The animals become disorientated and swim on
to the shore.
Another theory is that mass stranding is caused by the leader
making a wrong choice and, when the leader heads for the beach,
the others follow.
Despite these theories, researchers continue to try to find the
answer to this growing problem. Environmental issues have also
been raised. A rescue operation was launched in the China Seas in
1994 to save a dolphin, but it died. Following a post-mortem, it
was discovered that one third of the dolphin's stomach was filled
with and blocked by plastic bags.
Attempts to rescue dolphins and whales can be extremely difficult
and must be done properly. Dolphins and whales can die if they are
rolled back into the sea too roughly.
Experts ensure that a dolphin's body is kept straight. The
mammal's blow hole is kept clear so that it can breathe properly.
The mammal's skin is kept as wet as possible. Rescuers use a
stretcher to ease the shock of the move back to the sea.
Sometimes rescuers jump into the sea to guide the dolphin back to
its natural environment. According to researchers, even just a few
hours of human contact can mean that the dolphin does not return
to the sea immediately, but swims around in circles to show
emotional attachment.
More and more people are showing their concern for the fate of the
whales and dolphins. If you would like to know more about the
issues, contact your local environmental club or association. You
will be surprised at how much you can do to help.
GLOSSARY
parasite
(n): an animal
(usually small) which lives off another, e.g. fleas, ticks, etc.
(parásito)
disorientated (adj): confused and having lost all sense of
direction
(desorientado)
stretcher (n): equipment used to carry injured people or
animals
(camilla)
Source:
New English Digest
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