"It was absolutely amazing to see something so dramatic and intense in person," said 27-year-old Haydn Thomason.
Great white sharks seem to be too scared to return to one of their feeding grounds off the coast of South Africa.
"I don't frighten easily and this was terrifying," boatsman David Smith said.
Report from World Animal Protection reveals cruel practices at aquariums and zoos around the world.
"Killer whale populations found in the most polluted seas around Japan, Brazil, the U.K. or in the northeast Pacific, the authors report, are tending toward complete collapse."
The three-year-old female has been in poor condition for months now.
Controversy remains over its orca programme.
The killer whales do it in part to disable their prey before eating them.