According to their results recently published in the journal Ecology and Evolution, the culprit is clear: a killer whale fatally assaulted the over-15-foot-long shark, then proceeded to devour its innards. While it most likely zeroed-in on the nutrient-rich liver, multiple scavengers also got in on the meal.

Great white sharks are washing up dead on beaches with enlarged brains in what is becoming a spiralling marine mystery.

Faced with a rash of shark deaths marked by brain swelling, Canadian and American scientists are trying to solve a marine mystery.