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.
Talking points. 1  Oil and chemical spills, and human waste can have a dramatic effect on the habitats where whales and dolphins live. 2  Shipping, marine industries and military activities around the world are introducing powerful, loud noise into the oceans. 3  Excessive noise levels in the ocean can kill whales and dolphins.