Seigaiha
Fans of concentric arcs in overlapping rows, each row laid over the last. Only the top of every fan survives, and the field turns into swell.
About this pattern
Seigaiha, blue ocean waves · Japanese textile and ceramic ornament
The construction is a lattice of concentric circles, drawn from the top row down so every row hides the lower half of the one behind it. Spacing the rows half a radius apart and staggering each by half a fan leaves exactly the upper arcs showing, and those arcs line up across the sheet into waves nobody drew.
The pattern takes its name from a court dance and has been on Japanese textiles and ceramics for well over a thousand years. Set moving, the rings travel outward from each centre and the loop closes when every ring has taken its neighbour's place.