Blue Swimming also known as the flower crab, blue crab, blue swimmer crab, blue manna crab or sand crab, rajungan in Indonesian, and alimasag in Tagalog, Kapampangan, and Pangasinan, is a large crab found in the intertidal estuaries around most of Australia and east to New Caledonia

Shell is one of the leading mariculture commodities with high economic value. In Indonesia, in terms of production, shell is ranked the second largest after seaweed. Most shells that are found on beaches are the shells of marine mollusks, partly because many of these shells endure better than other seashells.

Indonesian Tiger snail is an important export commodity, mostly being exported to countries in Asia such as Taiwan, Hong Kong, Singapore, and Malaysia.

Abalone from Indonesia is environmentally friendly and does not pollute because it does not use chemicals, only uses microalgae and macroalgae as feed in the cultivation process.

Indonesia exports its fish bubbles mainly to China. These fish bubbles are usually processed into food ingredients such as soup.