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A dropline is a commercial fishing fishing rig consisting of a long fishing line set vertically down into the water, with a series of fishing bait fish hook attached to the ends of side-branching secondary lines called snoods. Dropline fishing, or droplining, is a specialized angling technique.
Droplines may be set either down oceanic trench or just into the open water column. They have a fishing sinker at the bottom of the line and are fixed to the water surface at least one bouy at the top. They are usually not as long as longlining and have fewer hooks.
Droplines can be contrasted with . Whereas a dropline has a series of hooks suspended sideways off a vertical mainline, a trotline has a series of hooks suspended vertically off a horizontal mainline.
The Australian Marine Conservation Society rates dropline fishing as having a "moderate impact" on wildlife and a "low impact" on marine habitats.
Droplines have the potential to interact with (killer whales). There is predation by orcas on commercial longline and dropline fish catches, including around Tasmania, Bering Sea and Prince William Sound areas,Killer Whale ( Orcinus orca) Depredation on Longline Catches of Sablefish ( Anoplopoma fimbria) in Alaskan Waters. July 1988. Northwest and Alaska Fisheries Center, National Marine Fisheries Service [1] causing significant financial loss to commercial fishers, and threat to orcas, which can become caught or entangled, exposed to ship strikes when moving or migrating, or suffer retaliation from fishers. Retaliation in response to predation on fish catches in previous decades has included shooting and harpooning of orcas. Orcinus orca: a Species Complex , Whale and Dolphin Conservation Society. Accessed: 2007-02-13
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