Peter Sacks likes to swim. Keep this in mind if you have a chance to stand before his work, recent examples of which are on display at Sperone Westwater in New York. From a distance, you may imagine certain movements in water. Ribbons of colored cloth evoke the coral reef surges and switchbacks of tropical fish. The artist sticks strips of these fabrics and textiles — white lace and linen from Normandy, indigo blue cotton from his native South Africa, kimonos from Japan — to his works’ surfaces, which have been built up not only with light fabrics, but also burlap, corrugated cardboard, paint and wood.