Mazu, also known as Maso in Japan, is a deification of Lin Mo, a woman traditionally said to have lived in Fujian, China during the 10th century, and is venerated primarily by seafarers and coastal communities as a protector of sailors and fishermen. Worship of Mazu spread from China to Japan and other parts of East Asia through maritime trade and migration, with temples and shrines established by communities tied to seafaring and fishing livelihoods. She is often depicted watching over the sea, and devotees have historically sought her guidance during voyages, though specific outcomes attributed to her intervention rest on tradition and belief rather than verifiable fact.