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Line fishing is a method of catching fish using lines with baited hooks or lures. This technique can range from simple handlines used by individual anglers to large-scale commercial operations.12

Commercial line fishing encompasses several methods:
* Bottom longlines: These are anchored lines with numerous hooks that are set on the seafloor, used for catching species like cod, haddock, and halibut.3
* Drifting longlines: These lines are allowed to drift with the current and are commonly used for tuna, sharks, and marlin.4
* Handlines: A single line with a baited hook, often used in smaller-scale fishing or in rocky areas.2
* Trolling lines: Lines trailed behind a moving boat to catch fish like mackerel.1

The primary challenge in line fishing is managing the lines and ensuring a sufficient supply of bait. Modern advancements include automated systems for baiting and stowing hooks, increasing efficiency for crews.23

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