I had some things come up so I thought I would share this video showing an orca attack on a white shark.
It is thought that some transient orcas specialize in hunting sharks.
Part of the predation is thought to be to turn the shark upside down which induces a torpor state.
This video is from Nat Geo.
Of note, in the past, killer whales were known to prefer the tongues and livers of whales.