What Is Long Line Fishing?

Long line fishing is a type of fishing that involves the use of a long line, with baited hooks attached at intervals along the line. It is sometimes referred to as “trolling” or “bottom fishing.” Long line fishing has been used for centuries and is one of the most popular forms of commercial fishing today.

The long line is either anchored to the seabed or towed behind a boat. It can be used in both shallow and deep waters, in order to Target various types of fish species.

Depending on the type of bait used and the depth at which it is fished, different species will be attracted to the line. In general, larger predatory fish such as tuna, marlin and swordfish are Targeted by long lines.

The baits used can range from natural baitfish such as herrings or sardines, to artificial lures such as jigs and spoons. Long lines can also be outfitted with multiple types of hooks, depending on what type of fish is being Targeted. Traditional long lines are set up with hundreds or even thousands of baited hooks attached along its length.

Long line fishing can have significant impacts on marine ecosystems depending on how it is done. Bycatch is a common problem associated with long line fishing, where non-Target species are unintentionally caught in the nets.

This can lead to overfishing and depletion of certain species, as well as bycatch mortality if these species are not released alive back into their habitats. In some cases, it can also cause entanglement in other types of marine debris such as plastic bags or ghost nets that may be left behind by other fishermen.

In order to minimize these impacts, fisheries management organizations have established regulations for long line fisheries that aim to reduce bycatch and promote sustainable practices among fishermen. These regulations include catch limits for certain species, gear restrictions such as circle hooks which reduce mortality rates for released fish, and regulations on minimum sizes for Target fish species in order to prevent overfishing juvenile stocks.

Overall, long lines provide an efficient way for fishermen to Target larger pelagic fish stocks that would otherwise not be accessible using conventional methods such as trawling or purse seine nets. With proper management and responsible practices among fishermen, this type of fishing can provide a sustainable way to harvest fish while minimizing its impacts on the environment.


Long line fishing is an effective way for commercial fishermen to Target larger pelagic fish stocks while minimizing its impacts on marine ecosystems when done responsibly with proper management regulations in place.

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Daniel Bennet