Esca is a type of fishing lure designed to attract fish. It often mimics the appearance and movement of prey, making it more appealing to fish. Escas can come in various shapes, sizes, and colors, and they are commonly used in both freshwater and saltwater fishing. The term "esca" is derived from the Latin word for bait. In addition to traditional fishing, esca can also refer to the bioluminescent lure used by certain deep-sea creatures, such as the anglerfish. These natural escas help attract prey in the dark depths of the ocean.