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Bycatch: In the fishing industry, the part of the catch made up of non-target species.
Dorsal fin: In fish, the unpaired fin found on the back of the body.
Endemic: A species or taxonomic group that is only found in one particular country or geographic area.
Melon: A lump of fatty tissue that forms the bulging forehead of toothed cetaceans (whales, dolphins and porpoises), thought to focus sound during echolocation.