Irfan Choo documented a sand-plover preying on a polychaete worm. The plover was tentatively identified as Greater Sand-plover (Charadrius leschenaultii), although it may well be a Lesser Sand-plover (Charadrius mongolus).
The polychaete worm in this series of images was surprised when it emerged from its burrow, to be immediately picked by the plover (above and below).
The bird feeds on mud or sand on interttidal mudflats, wading in the shallow water to forage. It may stalk worms in their burrows.