![Killer whale model](https://cdn.statically.io/img/static.wikia.nocookie.net/memoryalpha/images/c/c8/Killer_whale_model.jpg/revision/latest/scale-to-width-down/180?cb=20211129193858&path-prefix=en)
A model of a killer whale
![Phylum search mode - Orcinus orca](https://cdn.statically.io/img/static.wikia.nocookie.net/memoryalpha/images/c/cd/Phylum_search_mode_-_Orcinus_orca.jpg/revision/latest/scale-to-width-down/180?cb=20160408081253&path-prefix=en)
A killer whale
![Killer Whale sketch](https://cdn.statically.io/img/static.wikia.nocookie.net/memoryalpha/images/9/91/Killer_Whale_sketch.jpg/revision/latest/scale-to-width-down/180?cb=20190322121952&path-prefix=en)
Sketch of two killer whales
The killer whale (Orcinus orca) was an aquatic mammal indigenous to Earth. It was a cetacean species.
When Spock tried to match the sound of the Whale Probe to the sound of an Earth animal aboard the Klingon Bird-of-Prey HMS Bounty, a killer whale was one of the lifeforms shown. (Star Trek IV: The Voyage Home)
Three huge models depicting a killer whale family were on display in the Cetacean Institute in San Francisco in 1986. (Star Trek IV: The Voyage Home)
In 2293, Captain James T. Kirk's quarters aboard the USS Enterprise-A featured a black and white sketch of a pair of killer whales. (Star Trek VI: The Undiscovered Country)