Skuas are related to gulls, waders, auks, and skimmers. Skuas and jaegers are related to gulls, shorebirds, auks, and skimmers. The terns are small to medium-sized seabirds closely related to the gulls, skimmers and skuas. Many plants, however, use primary clarifiers with mechanical surface skimmers for fat and grease removal. Laridae is a family of medium to large seabirds and includes gulls, terns and skimmers. Laridae is a family of medium to large seabirds and includes gulls, terns, and skimmers. Laridae is a family of medium to large seabirds and includesgulls, terns, and skimmers. They may also be referred to as sieves, spoon sieves, spoon skimmers, or basket skimmers. Oil was collected from water by using skimmers. This was done with the placement of skimmers and booms. Cylindrical-shaped protein skimmers are also common. Their forces are divided into five main types&colon; Mites, Drones, Skimmers, Scarabs, and Invaders. In total 2,063 various skimmers were used. Their Air Skimmers are Model III Ultra. Many large-scale skimmers exceeded the limit.