predatory black-and-white toothed whale with large dorsal fin; common in cold seas
"The massive orca breached near the surface of the icy water, showcasing its iconic black-and-white coloring and towering dorsal fin."
A sea mammal (Orcinus orca) related to dolphins and porpoises, commonly called the killer whale.
"The massive black-and-white orca breached the surface of the water, displaying its distinctive dorsal fin as it hunted in the cold Arctic waters."