Is orca rare in Adopt Me?

I'm curious, is the orca animal in the popular game Adopt Me considered to be a rare find for players? It's a fascinating aspect of the game that I've heard can be quite challenging to obtain certain creatures, so I'm wondering if the orca falls into that category. Are there specific methods or requirements players need to fulfill in order to have a chance of encountering one? I'd love to hear more about the rarity and availability of orcas in Adopt Me.