Île des Pingouins eroded by the sea, steep-sided, 4 km long and 1 km wide. Its surrounding coastal cliffs vary from 50 m to 300 m in height, making it virtually inaccessible by sea and rarely visited. It is free of introduced species, so has a relatively pristine biota compared with the other islands in the archipelago. At least 29 bird species breed on the island, which has been identified by BirdLife International as an Important Bird Area (IBA). It has an exceptionally high density of seabirds, including a million pairs of macaroni penguins, 300 pairs of black-browed albatrosses, four pairs of Salvin's
Macaroni and cheese while "shells and cheese" is sometimes used when it is made with Conchiglie. While Cheddar cheese is most commonly used for macaroni and cheese, other cheeses may also be used—usually sharp in flavor—and two or more cheeses can be combined. Popular recipes include using Gruyere, Gouda, Havarti, and Parmesan cheese. Macaroni and cheese can be made by simply layering slices of cheese and pasta (often with butter and/or evaporated milk) then baking in a casserole, rather than preparing as a cheese sauce. Also, some like to include a crunchy topping to their baked macaroni and cheese by topping it off