Sentences with phrase «longest migratory movements»

Field research on marine mammals is one of the most challenging of biological studies, primarily because scientists are often unable to follow ocean - going species such as whales across their full range; the humpback whale in particular undertakes some of the longest migratory movements of any mammal.

Not exact matches

There is much that is not known concerning them, but it is known that long, long before they arrived in India they were part of a great migratory movement of people, sometimes identified incorrectly as a race, probably better as a people of a common culture.