There are two reasons I think that the orca whales are doing this because it said in the article that a fisherman spotted a couple of orcas watching them pull up their main source for food in fishing nets and my second reason is that they're trying to protect their calves and trying to teach them to hunt/feed them at the same time.

OK 2020, we get it, its a new decade and everything, but seriously, can stuff get any more exciting!!!!!!!!!???????????