Board Thread:Custom Lore Development/@comment-26210095-20160109005802/@comment-26210095-20160109012228

Sacrifice the sandworm? No. They respect them, and use them as mounts to get across vast spaces of the desert. The sandworm is involved in the biologic processes that make spice, as well as the crysknife (their sacred weapon, made out of a sandworm's tooth. )

If you mean give sacrifices to the sandworm, in a way. Blind people are abandoned to the desert to be eaten.