Fishing lure and tackle, also called fishing gear, is a general term that refers to the fishing equipment used by fishermen while fishing. Almost any equipment or gear used for fishing can be called fishing tackle. Some examples are fishing lures, bait, lines, rods, reels, fish nets and trawls, downriggers, outriggers, gaffs, harpoons, clevises, floats, and traps. Gear that is attached to the end of a fishing line, such as hooks, leaders, swivels, sinkers and snaps, is called terminal tackle. The fishing hook is usually attached by a line to a fishing rod. A fish bite indicator such as a float is sometimes used. The fishing rod is usually fitted with a fishing reel that functions as a mechanism for storing, retrieving and paying out the line. The hook can be dressed with fishing lures or fishing bait. Catch and release fishing is increasingly practised by recreational fishermen. In many parts of the world, size limits apply to certain species, meaning fish below and/or above a certain size must, by law, be released.