What is happening with orcas?

Can you provide some insight into the current status and any concerning trends surrounding orcas, the majestic killer whales? Are their populations facing any threats, such as habitat loss, pollution, or illegal hunting? Are there any conservation efforts in place to protect these incredible creatures and ensure their survival for generations to come? Additionally, are there any recent scientific discoveries or research findings that have shed new light on orcas' behavior, social structures, or overall well-being?