Then, all went quiet again until 2015/16, when two distinct events of orcas preying on broadnose sevengill sharks were reported from Miller’s Point in False Bay over a five-month period. This occurred in the Southeast Farallon Islands (off the coast of California in the north-eastern Pacific Ocean). In fact, 1997 was the first time anyone witnessed (and documented) orcas killing and eating the liver of a white shark. While the grisly False Bay deaths aren’t the first recorded case of orcas predating on white sharks, it’s not a usual practice.
So basically, a big, fatty, dream meal for other carnivores with high nutritional needs. In other terms, one adult white shark liver could contain 400 litres of oil and 2 million kilocalories of energy. A White shark’s liver constitutes a whopping 28 per cent of its total body weight, and 90 per cent of that can be high-energy lipids.
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