Orca Types: Orcas are divided into three types: "resident orcas," which eat fish and squid; "transient orcas," which eat marine mammals; and the recently discovered "offshore orcas," which eat fish, sharks and sea turtles.
A Taste for Birds: Some orcas prey on birds, such as cormorants, penguins and sea gulls. They have been observed regurgitating fish onto the water's surface to attract sea gulls and then eat them.
Humongous Hunters: Adult orcas weigh, on average, between 5,700 to 16,000 pounds. The largest orca on record, a male, weighed over 8 tons (17,636 pounds).
