Using trawlers, mariners catch large amounts of fish in the nets (which are also called trawls) at once. Furthermore, trawls catch a different selection of fish when they’re hauled through deeper waters. Some boats even dredge sea beds for shellfish such as oysters and their pearls.
But these methods also have their downsides. For example, large-scale operations can result in overfishing and devastate underwater ecologies. There is also the matter of bycatching. To be more specific, this term refers to accidentally trawling up unwanted fish or marine creatures.
In recent years, Russia has received attention for the unusual creatures caught in their trawls. At least, they look unusual to us, but many deep-sea creatures appear alien to us landlubbers. Take the bizarre bycatches of fisherman Roman Fedortsov, for instance.