Orcas are slender and black with white bellies and yellow eyes
Orcas are the vicious killer whales of the sea, and they have the habit of going after its prey, attempting to devour it.
Role in the Flim
They are seen in the last third of the film, where they emerge from underwater and start chasing Hubie and Rocko down, causing the two penguins to swim away and run on several icebergs. During the chase, Hubie loses his pebble, and after the orcas gave up chasing Hubie, it swam away afterwards, leaving behind Rocko's bandana.