* They are spread across all oceans. Killer whales have a vast range, inhabiting all oceans.
* Populations are difficult to track. They live in remote areas, are highly mobile, and can be difficult to count accurately.
* Numbers fluctuate. Killer whale populations are dynamic, with changes due to births, deaths, and migrations.
However, estimates suggest there are roughly 50,000 killer whales worldwide.
It's important to note that:
* This is an estimate, and the actual number could be higher or lower.
* Some populations are much smaller than others. Certain killer whale populations, particularly those in specific regions, are considered threatened or endangered.
Conservation efforts are crucial to protect these fascinating and intelligent animals.