Abalone in the context of "Monotypic taxon"

Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (/ˈmɒləsks/). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The number of additional fossil species is estimated between 60,000 and 100,000, and the proportion of undescribed species is very high. Many taxa remain poorly studied.

Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat, as numerous groups are freshwater and even terrestrial species. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known extant invertebrate species. The gastropods (snails, slugs and abalone) are by far the most diverse class and account for 80% of the total classified molluscan species.

Sea snails are slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the absence of a visible shell.

Luodian (螺钿) in Chinese or Raden (螺鈿) in Japanese for one of the decorative techniques used in traditional crafts and woodwork. It refers to a method of inserting nacre into a carved surface of lacquer or wood. The basic technique of atsugai raden originated around 3500 years ago in Egypt and later spread along the Mediterranean coast. It was subsequently introduced to Japan from the Tang dynasty during the Nara period.

"Luodian (also known as “Luodian” or “shell inlay”) is a decorative craft in which materials such as shells and mother-of-pearl are cut, polished, and inlaid onto the surfaces of lacquerware, wooden objects, or metalware. Its history can be traced back to the Shang and Zhou dynasties, reached its peak during the Tang dynasty, and was widely applied to furniture, screens, jewelry, and other objects in the Ming and Qing dynasties. Under light, Luodian works refract a rainbow-like luster, earning the reputation: “Of all the wonders one could paint, a single shell outshines nature itself.”

A raceway, also known as a flow-through system, is an artificial channel used in aquaculture to culture aquatic organisms. Raceway systems are among the earliest methods used for inland aquaculture. A raceway usually consists of rectangular basins or canals constructed of concrete and equipped with an inlet and outlet. A continuous water flow-through is maintained to provide the required level of water quality, which allows animals to be cultured at higher densities within the raceway.

Freshwater species such as trout, catfish and tilapia are commonly cultured in raceways. Raceways are also used for some marine species which need a constant water flow, such as juvenile salmon, brackish water sea bass and sea bream and marine invertebrates such as abalone.