To see an orca in your dream, signifies distrust and suspicious motives.
A whale of any sort in your dream is a sign of protection and help and if you see the flukes of his tail you will have much good luck. To dream of an orca, also known as a killer whale, shows the dreamer is not sure of the motives of his/her protector. The *killer* whale then represents distrust and must be viewed in that light by the dreamer.
Authentic personal power, and the ability to make your life the way you want it to be. Magical, spiritual, or unknown. Dreaming of this animal can represent:
Having too much of one of these qualities, or that you could benefit by being less this way
Not having enough of one of these qualities, or that you could benefit by being more like this
Someone or something in your real life with whom you associate one of these qualities (an event, situation, threat, etc.)
For more clues, pay attention to what the animal was doing or any particular characteristic that stood out.