Commercial fishing harvests lobster, shrimp, tuna, abalone, and clams. These include turquoise, jet, argillite, steatite, red shale, freshwater clam shell, abalone, and spiny oyster. Sea otters eat shellfish and other invertebrates (especially clams, abalone, and sea urchins). Most abalone and rock lobster is exported to Asia. Ingredients are sea bream, abalone, shiitake, mitsuba and shiso. Some of the consumed species included mussels, abalone, and a wide array of clams. Tasmania is known for its wild abalone and crayfish. Australia is one of the largest producers of abalone and rock lobster. During the winter, many seafoods such as clams, mussels and abalone gain the most fat. Around 12,500 Tasmanians recreationally fish for blacklip and greenlip abalone. The sea snail perlemoen abalone is targeted by illegal fishing and remain overfished. Tenore followed by integrating with their system of carnivorous fish and the macroalgivore abalone. The reef is seeded with young abalone from an onshore hatchery. Sale of sport-obtained abalone is illegal, including the shell. Some saxophones are made with abalone, stone, or wood key buttons.