However, there have been some documented cases of:
* Large male polar bears preying on young orcas in areas where their ranges overlap.
* Great white sharks potentially attacking orcas, especially if the orca is injured or a juvenile.
* Other orcas can also prey on young orcas, particularly in cases of infanticide, where a dominant pod kills the young of another pod.
It's important to remember that these instances are rare and don't represent a typical predator-prey relationship. Killer whales are generally considered to be at the top of the food chain and don't have a significant threat from any other animal.