龙虾, or "lobster," is a type of crustacean found in oceans around the world. They have long bodies, large claws, and a hard shell. Lobsters are typically found on the ocean floor and are known for their ability to regenerate lost limbs. They are popular seafood and are often served boiled or grilled. In addition to their culinary value, 龙虾 play an important role in marine ecosystems. They are scavengers, feeding on dead fish and other organic matter, which helps keep the ocean floor clean. Their presence also supports various marine species, making them a vital part of the ocean's food web.