A few reasons why the whales and some other animals beaching

People are marine animals that inexplicably thrown out on the shore, from the first century BC, as evidenced by the ancient Greek and Roman documents. Today, marine biologists are taken to give reasons only half of these incidents and the reasons for these very different.

Often, this injury or illness. Affected by the attack of a predator animal may feel too weak to stay on the water, at some moment it gives up and allows themselves to make waves on the shore.

Much more mysterious is the case where the shore is ejected a group of animals. One explanation that offer scientists - that whales and dolphins, which hunt and migrate in small herds, are victims of their own social structure. If the leader or dominant animal washed ashore due to illness or injury, the remaining members of the group may follow. Another version - that the herd swims too close to the beach and does not have time to come back at low tide.

In some cases, massive "suicide" marine animals commit shortly after the close of active use of military sonar. In 2000, the gods, for example, 17 animals of four different species (beaked whales, toothed whales, pygmy whales and spotted dolphins) have been found on the bank of 36 hours - the day of the application of sonar in these places and in subsequent days.

Studies that after this incident conducted the National Administration Oceanic and Atmospheric Administration, showed that the most probable cause was naval sonar device. These studies suggest that sonar has an impact on the physical condition and behavior of marine animals.

It also happens that the animals intentionally beaching - for hunting. Black killer whales, for example, frequently attack pinnipeds such as seals and sea lions in the surf zone, or almost on the shore, where they were victims of changing the way of movement from swimming to walking and doing it rather awkwardly. While trying to get the animal out of the water, whale jerk and grabs its prey. After that, it remains to wait for a suitable wave, or try to get back into the ocean, wriggling.

Source: www.mixstuff.ru

via factroom.ru