Sloughs are channels of free-flowing water in between the sawgrass marshes. Sloughs are deeper than sawgrass marshes, about 3 feet (0.91 m), and may stay flooded for at least 11 months out of the year if not multiple years in a row.[30] The peat beds that support sawgrass are slightly elevated and may begin abruptly creating ridges of grass. The borders between these systems are called "ridge-and-slough" landscapes. Aquatic animals such as turtles, young alligators, snakes, and fish live in sloughs and they usually feed on aquatic invertebrates, such as the Florida apple snail.[31] Plants grow here, usually submerged or floating like bladderwort (Utricularia), waterlily (Nymphaeaceae), or spatterdock (Nuphar lutea). Major sloughs in the Everglades system include the Shark River Slough draining to Florida Bay, Lostmans Slough bordering The Big Cypress, and Taylor Slough in the eastern Everglades.