Orcas are known to kill great whites and eat their livers.
has become increasingly apparent in recent years. In 2015, reports emerged in South Africa of shark carcasses being found in False Bay, off the coast of Cape Town, with their livers missing. Analysis of the bite marks suggests they had been killed by killer whales.
In 2017, the carcasses of five great whites were found with similar injuries, suggesting they had been attacked and killed by killer whales. A year later, great whites were noticeably absent from False Bay—a popular hunting ground for the species, where they are known to jump out of the water to catch seals. It is thought the presence of killer whales, and the risk they pose, had caused the great whites to leave the area. Until January, there hadn't been a single great white sighting for approximately 18 months.
Kock, who also serves on the executive committee of the shark safety program Shark Spotters, said the absence of great whites from False Bay is concerning as they play an important role in the ecosystem there."White sharks predate on numerous species, such as fish, other sharks, seal and dolphins, and influence these species directly by reducing their numbers, and removing the weak and sick, but they also do so indirectly by influencing the prey's behavior.
A great white shark jumping from the water in False Bay, South Africa, before they deserted the hunting ground. Researchers believe killer whales, which prey on great whites, are behind their disappearance from the area.
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