Carambola (Harpa), also known as harp snail.

Carambola (Harpa), also known as Harpa, is a class of carambolaceae belonging to the Muricoidea family. It is distributed in warm shallow waters and has broad, thick stomachs and feet. It is easy to identify. The meat of these conches is highly praised by diners, and their colorful shells are often sold as ornamental shells. But before they become food/playthings for Homo sapiens, carambola snails are not oil-saving lamps. They are terrible killers of crustaceans, mainly depending on small shrimps and crabs in coastal areas. Its broad and thick stomach is a sharp weapon against crustaceans, which can tightly wrap its prey so that it can not break away. Then carambola will secrete acid to soften the shell of shrimp and crab, and then "pierce" them bit by bit with a file-like tongue (poor crabs have a pair of hollow pliers but can not resist the sticky soft mass). Meat is a good example of "flexibility". Interestingly, when encountering more powerful carnivores, carambola snails will also "break the wrist of a strong man", cut off the back part of its stomach and foot like gecko dropping its tail, attract the attention of the enemy with this meat, and take the opportunity to slip away.

Figure 9 shows carambola snails attacking a pair of mating steamed crabs – female crabs unfortunately become prey of carambola snails, while male crabs who have lost their "loved wife" can only stamp their feet.