Fishing experts are looking for ways to fish in the mesopelagic zone, a layer of water that stretches from 200-1,000 meters (660-3,300 feet) beneath the surface, which has, thus far, remained relatively unexploited. Many challenges stand in the way of making mesopelagic fishing a reality, such as the difficulties of finding and capturing mesopelagic fish, and processing them into usable products. Yet experts are working to overcome these obstacles, with one suggesting that mesopelagic fishing could begin in the next few years. Conservation experts have expressed concern about the possible start of mesopelagic fishing, arguing that it could cause environmental problems.