Yesterday i just saw in the news about this but i already knew they only eat the livers but didnt know wy. It is because the amount of oil in the liver Great White Sharks. The sharks also know when they are around and eave the area for certain amount o time. Last year i visited Cape Town, a famous place to see white sharks, but people can barely see them around the area for the last month because there were 3 Orcas hanging around.