Longlines are versatile and can target a variety of species depending on the bait, hook size, and depth at which they're set. Typically, they are used to target: Tuna: Especially yellowfin, albacore, and bluefin varieties. Swordfish: A major target for many pelagic longliners. Halibut: Particularly in colder, northern waters. Cod: Especially in the North Atlantic regions. Sharks: Certain species are targeted for their meat, fins, or liver oil. Tilefish and Grouper: Common in warmer, subtropical waters. Snappers: Popular targets in many coastal areas. Patagonian Toothfish (often known as Chilean Seabass): Targeted in southern ocean waters.