Humpback whales are deterred from their migration routes by the noise of air guns used to survey the ocean floor for oil and gas deposits, a new study has found.
Humpback whales have been spotted fending off killer whales from attacking other species. But this kind of interspecies altruism raises an evolutionary conundrum.
Understanding this will boost conservation efforts.
It is one of the most controversial questions in nature. Now a group of British researchers have shed light on the answer.