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A dolphin moves in a very large area. Navigation is of great importance, because
a dolphin would easily lose track of where it is without a good naviga
tional
system.
It happens once in a while - not without reason - that a dolphin or a group
of dolphins loses its way. Sometimes this is not such a big problem if it is
a couple of kilometers away from where he should be. But, if the dolphin is
washed ashore in a shallow area, it will be at its end. Washed ashore, it cannot
make its own way back to the sea. It is critical for the dolphin to keep its
body wet and if it does not, it will die of dehydration. Stranded dolphins can
only be saved if humans are able to get there quickly enough to help them back
into the water. Hence, these kind of navigational mistakes can thus be fatal.