Tide World of ManiSurvival is the ability to swim in strange water." Frank Herbert Mani is an ocean world, the only spit of land is the shoals of the Last Atoll, a settlement in the shadow of a crashed colony ship turned palace, ruled with an iron fist by the Land Barons, ancestral lords of the Atoll, the have nots relegated to floating shanty towns. It's a tidally locked planet where people live in an eternal sunset, the thin sliver between the dark and the light.