pearl culture; pearl farming
Refers to the cultivation of pearls, typically by inserting a nucleus into an oyster or mussel.
Pearl farming is one of the main industries in this region.
養殖 is general aquaculture/farming; 真珠養殖 specifically refers to pearl culture.
真珠 means pearl; 真珠養殖 is the cultivation process.
Compound of 真珠 (pearl) and 養殖 (culture, farming).