Observations of migrating humpback whales have shown that they swim to 2000 miles without stopping, without deviating from the course of more than one degree! Neither the current nor the vagaries of the weather they will not interfere.
Humpback whales can boast one of the most modern compasses in animals. During seasonal migrations they travel over 6500 miles. Moreover, as scientists have found the University of Canterbury in New Zealand, whales swim like a ruler.
The researchers observed 16 animals migrating into Antarctic waters off the east coast of Brazil, the Cook Islands and New Caledonia. As demonstrated by the equipment, the whales swam non-stop from 100 to 2000 kilometers at a time, without deviating from the course of more than one degree, and not paying attention to trends and changes in the weather. One such transition took a whale for several days.
In short, imagine that you are in a multi-kilometer hike and you have to go a few hours as a neurological test, strictly on the white line, despite the rain and wind.
Now before zoologists faces a difficult challenge: how to explain this error-free navigation. Most migratory animals used for terrain orientation or magnetic field of the Earth, or the position of the sun. The whales seem to have mastered both mechanisms. First, they keep the course in any weather. Second, as the scientists say, the magnetic field varies in water, therefore, also can not be the only basis for such a precise repetition route.
However, the whales are likely to have some other navigational skills. It is assumed that they can find their way to the moon and the stars, which can lead them in the night. And here's another bold hypothesis to guide the way whales use echolocation. Vocal abilities of humpback whales are well known, they have the most extensive repertoire of cetaceans and can sing their songs in a half hour. Perhaps some of vocal exercises to help "feel" an area in the far distance and constantly adjust course … In any case, the ability of these animals travel thousands of kilometers in a straight line by itself is intriguing imagination to leave it unattended.