An Orca is an extinct marine mammal predator that lived in oceans of the Holocene. They were common as some fossil sites where orca fossils seems to show. They probably preyed on other marine animals and even land animals unlucky enough near the orca-infested waters such as "Pigs", "Cows", "Humans", and other animals smaller than a "Rhinoceros". They were probably one of the smartest animals on Earth as their braincases showed. They probably swam like a fish in a similar manner to a "Dolphin".
- It played as Mosasaurus in Holocene Park Series
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