The Lau people historically lived on artificial islands made of coral in the Lau lagoon of northern Malaita. The Lau economy centred around resources from the sea, but the Lau also practiced agriculture on land they owned on the mainland. Lau religion centred around on the worship of ancestral beings, some of whom took the form of sharks. In the 1980s, the Lau were the subject of a documentary involving the decline of their indigenous religion due to Christianity and forces of modernity.