article_snippet.sent: Last year, a study revealed that a smaller Gray’s beaked whale performs the deepest dives made by any mammal on the planet at 9,816ft (2,992metres) below the waves - the equivalent of just under seven Empire State Buildings - and stays below for 138 minutes .
article_snippet.sent: A study published last April has revealed that a smaller Gray’s beaked whale performs the deepest dives made by any mammal on the planet.
article_snippet.sent: Scientists were surprised to record one of the mammal's dives, which was 9,816ft (2,992 metres) below the waves.
article_snippet.sent: And a smaller Gray’s beaked whale stayed up to two miles below - around the depth of just under seven Empire State Buildings on top of one another - for 138 minutes.
article_snippet.sent: It is the first time that the diving behaviour of the species has been carefully examined and scientists are particularly interested in scientists because of the suspected effects of sonar - a system using transmitted and reflected underwater sound waves to detect and locate submerged objects.