Thalamita danae is an animal belonging to the genus Thalamita in the family Crabs. It is distributed in Japan, the Philippines, Australia, New Caledonia, Indonesia, India, the Red Sea, and Chinese Mainland's Guangxi, the Xisha Islands, Hainan Island and other places. Its living environment is sea water, and it mostly lives in the rock reefs near the low tide line and the sandy or muddy shallow seabed, especially in coral reef areas.

Japanese crabs, also known as red armored crabs, sea red crabs, sand crabs, stone crabs, stone crabs, etc., are a species of crab in the family Crabs. It is distributed in Japan, Malaysia, the Red Sea, Taiwan Island and Chinese Mainland in Guangdong, Fujian, Zhejiang, Shandong Peninsula, Liaodong Peninsula and other places. This type of crab often inhabits low tide lines, underwater areas with aquatic plants or mud, and/or lurks under rocks. In scientific classification, it belongs to the animal kingdom, arthropod phylum, crustacean subphylum, soft shelled class, Decapoda, abdominal embryo subphylum, swimming crab family, and crab genus.

The olive green crab is a species of animal in the family Crabaidae, belonging to the genus Crabapple. It is a commercially important crab species distributed in the Indo Western Pacific region, including Southeast Asia, South Asia, Japan, North Australia, as well as the East and South China Seas of China. Due to its fast growth, large size, and strong adaptability, its meat is delicious and has high nutritional value. It is a traditional precious seafood and artificial breeding object in Southeast Asia, South Asia, and Taiwan. Its claws are orange red in color, and its carapace is horizontally elliptical, with a width of up to 18 centimeters and pointed sides.

Platycodon grandiflorus, commonly known as orange mud crab, is a species of important commercial value in the mangrove crab genus. It is one of several crabs known as mud crabs, distributed in mangrove areas from Southeast Asia to Pakistan, from Japan to northern Australia. Like other species in the Scylla genus, it is widely cultivated using wild caught populations in aquaculture.

Gray eyed snow crab is a type of snow crab found in the northern Pacific and northwestern Atlantic. It is very similar to the red eye snow crab and is commonly referred to as "snow crab" when sold. In Canada, it is also known as "queen crab", and in Japan, it is also known as "pine leaf crab" or "North Sea pine leaf crab". The most precious one is the "Echizen crab" produced in Fukui Prefecture, which is a tribute to the Japanese royal family. Its price is much higher than other snow crabs, and only the snow crab produced in Fukui Prefecture can be called Echizen crab. The above name only refers to male crabs in Japan, while female crabs are called "fragrant box crabs" because it is a popular ingredient in Japan and there are many local names in various places.