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.
How Do Whales Protect Themselves? By Brett Smith; Updated April 24, 2017 Whales are some of the biggest animals in the sea, but their massive size doesn't exclude them from predation. One of the biggest predatory threats to whales is actually other whales -- namely killer whales, or orcas. Popular as a tourist attraction, killer whales are just as deadly as great white sharks -- but much, much smarter.