The sexes are similar in appearance. Species that breed in warmer climates tend to be brown or black above with less or no white below and bare spots colored red and black or entirely black. Tubenoses in Action W hile penguins evolved into fabulous swimmers, tubenoses became fabulous fliers. With their vast wingspans, albatrosses, in particular, are perhaps the greatest gliders in the animal kingdom. Shearwaters appear to slice the water with their long, narrow wings, as they rapidly skim low over the sea, sometimes hidden from view by waves.
Petrels rise higher in the sky.
Diet Tubenoses prey on marine animals. Most larger species feed on fish or squids and other cephalopods. Smaller species feed on plankton. . Distribution T ubenoses rank with penguins as the most marine of seabirds, most species approaching land only to breed, and then generally favoring remote islands. About half the species in this order, including all diving-petrels, are restricted to the Southern Hemisphere.