This is the dramatic moment a pod of Orcas descended on a mother grey whale and her calf in front of a stunned boatload of tourists.
The mother fought to protect her baby but sadly wasn't able to defend against the group of nine predators.
This is the fourth kill in a week from the pod of killer whales in what's being described as an "unprecedented" killing spree by marine biology experts.
Taking place in California's Monterey Bay, the Orcas are able to memorise the migratory patterns of grey whales and keep up the hunt for hours.
"This has never happened in my thirty years," marine biologist Nancy Black told SFGate .
"Just to witness that out in nature when you usually see that kind of thing on television is really spectacular."
According to Black, the mother grey whale attempted to save her offspring by rolling over with the calf on top of her belly; keeping it away from the Orcas.
She also used her tail to try and fight back - but Black contests that this particular grey whale and calf were skinnier and weaker than average and unable to survive the onslaught.
"Mothers and calves are last to migrate because they stay in Mexico longer so their calves can grow up and gain weight before they make that long migration," she explained.
In this case, it took the pod of killer whales only four minutes to kill their prey when it would usually take up to about 20 minutes.
What makes it even more remarkable is that the Orcas have been killing consistently for the last week.
"These nine whales must be very full yet continue to eat," Black said.
"I expect they will become even more social in upcoming days as they [usually] do after stuffing themselves."