The gigasecond (Gs) is a unit of time in the International System of Units, defined as 109 seconds using the SI prefix system.
John Hargrove, who spent 14 years as an orca trainer, mostly at SeaWorld, says there was no doubt that the whale was aggressive. And the reason for whales' aggression, he says, is that they're held captive.Hargrove eventually became disillusioned with SeaWorld's treatment of orcas and left the company.ohn Hargrove, who spent 14 years as an orca trainer, mostly at SeaWorld, says there was no doubt that the whale was aggressive. And the reason for whales' aggression, he says, is that they're held captive.
Narwhals have few predators, but they have been observed being hunted by orcas, or killer whales. For example, in the summer of 2005, a pod of orcas killed at least four narwhals in Admiralty Inlet in Nunavut, and researchers observed a number of defensive and avoidance strategies among narwhal groups in the area.he whorled tusk of the narwhal may have contributed to the legend of the mythical unicorn, but the real flesh-and-blood animal is hardly less fantastical. This unusual toothed whale inhabits the high polar seas of the Arctic Ocean, traveling in large groups called pods and sometimes diving to remarkable depths.