Why whales "suicide" series?

Along the coast flooded whale and dolphin is the spectacle that people often witness Scotland.
Many answers have been given after the mysterious death of whales and dolphins.
Previously it was believed that the change of sea water and poor health has caused 2 dead fishes collective, but the fact is that there are so many causes them to seek death.
Positioning in the wrong direction
Positioning direction is endowed instinct of fish. However, there are times when whales and dolphins wrong positioning.
Many studies have shown that the main job of the military exercises on the sea water and the use of ultrasonic high frequency caused positioning capabilities of dolphins and whales is no longer accurate.
Not only that, the water temperature change or pollution levels rising ocean also makes two of these animals have the more unusual acts.
The collective suicides is one cryptic message from the ocean?
Although many factors such as sick, wounded, positioning error was given but many people still believe that this is related to the "curse" of the ocean.
Even those who believe that spiritual, collective death of the herd dolphins and whales is the anger of the ocean, one message threatening to human life.
Whales and dolphins have depression?
If such people can have depression, many people believe that dolphins and whales can suffer this strange disease. It may be appropriate words to explain why animals such stout mass die.
However, many people put the opposite problem is why thousands of whales to the disease but not the first few? Or all of them are behavioral disorders?
Aliens are dominant dolphins and whales?
Finding a solution to the deaths of two species will probably still is one long because many scientists believe that aliens are using 1 power to control certain whales and dolphins .
Accordingly, they said that the aliens are using one particular frequency to tie herd dolphins and whales follow their actions. And the collective death of the shoal is the failed experiment of aliens in controlling whale.

Source collectibles