| − | Commercial fishing uses different techniques and types of fishing vessels. These include longline fishing, driftnetting, and trawling. Longline fishing uses a single fishing line pulled behind the [[boat]] with many hooks attached. Driftnetting is the use of a fishing net suspended in the water which is later retrieved. Trawling is the use of a fishing net dragged behind a boat on the ocean floor. For some non-fish species such as [[crab]], cages known as 'pots' are used and are left in the water with bait, to be later retrieved by the fishermen. | + | Commercial fishing uses different techniques and types of fishing vessels. These include longline fishing, driftnetting, and trawling. Longline fishing uses a single fishing line pulled behind the [[boat]] with many hooks attached. Driftnetting is the use of a fishing net suspended in the water which is later retrieved. Trawling is the use of a fishing net dragged behind a boat on the ocean floor. For some non-fish species such as [[crab]], cages known as 'pots' are used and are left in the water with bait, to be later retrieved by the fishermen. Many of the world's ocean fisheries are clearly depleted when compared to as recently as the 1950's.<ref>http://wwf.panda.org/about_our_earth/blue_planet/problems/problems_fishing/</ref> |