 The short-tailed shearwater is the deepest diver of the shearwaters, having been recorded diving below 70 m. Some albatross species are also capable of limited diving, with light-mantled sooty albatrosses holding the record at 12 m. Of all the wing-propelled pursuit divers, the most efficient in the air are the albatrosses, and they are also the poorest divers.This is the dominant guild in polar and subpolar environments, but it is energetically inefficient in warmer waters.With their poor flying ability, many wing-propelled pursuit divers are more limited in their foraging range than other guilds, especially during the breeding season when hungry chicks need regular feeding.