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.
Killer whales (or orcas) are powerful predators capable of killing prey much larger than humans, such as leopard seals and great white sharks. They have also been recorded preying on usually terrestrial species such as moose swimming between islands.However, wild orcas are not considered a real threat to humans, as there are few documented cases of wild orcas attacking people, and no fatal encounters.In captivity, however, there have been several non-fatal and fatal attacks on humans since the 1970s.Experts are divided as to whether the injuries and deaths were accidental or deliberate attempts to cause harm. On February 10, 2014, a free diver in Horahora Estuary near Whangarei, New Zealand was pulled down for over 40 seconds by a killer whale that grabbed a bag containing crayfish and urchins, which was attached to his arm by a rope. 2  The rope eventually came free. 3  He then undid his weight belt and returned to the surface.