The common thresher, also known as Atlantic thresher, is the largest species of thresher shark, family Alopiidae, reaching some 6 m in length. About half of its length consists of the elongated upper
Alopias vulpinus noaa 2
Thresher shark
Early illustration of a common thresher from Natural History of Victoria (1881)
The common thresher can be distinguished from other thresher sharks by the appearance of its head and the coloration above its pectoral fins.
The swordfish, also known as the broadbill in some countries, are large, highly migratory predatory fish characterized by a long, flat, sword-like, pointed bill. They are the sole member of the family
Swordfish skeleton at the National Museum of Natural History, Washington, DC
A deep-diving swordfish, photographed in the eastern Gulf of Mexico at 701 meters below the surface.