a blue whale is a dark blue color that looks like black it dose not have teeth.he killer whale (aka orca) is mostly black, with a white underside and sides, and white patches behind its eyes. (The pattern of coloring can actually be used to identify ind â¦ ividuals, as each has a different pattern.) It can grow to 5-8m (16-26ft), with the females being smaller than males.
Hives â also known as urticaria (ur-tih-KAR-e-uh) â is a skin reaction that causes itchy welts, which can range in size from small spots to large blotches several inches in diameter. Hives can be triggered by exposure to certain foods, medications or other substances.
1 Typically, the hives are a reaction to food, but in about half the cases, the trigger is unknown. 2  Common foods may be the cause, as well as bee or wasp stings, or skin contact with certain fragrances. 3  Acute viral infection is another common cause of acute urticaria (viral exanthem).