Lamniformes

Lamniformes is an order of sharks commonly known as mackerel sharks (which may also refer specifically to the family Lamnidae). It includes some of the most familiar species of sharks, such as the great white shark, as well as more unusual representatives, such as the goblin shark and the megamouth shark.

Members of the order are distinguished by possessing two dorsal fins, an anal fin, five gill slits, eyes without nictitating membranes, and a mouth extending behind the eyes.

Species
The order Lamniformes includes seven families, with a total of sixteen living species:

Order Lamniformes
 * Family Alopiidae Bonaparte, 1838 (thresher sharks)
 * Genus Alopias Rafinesque, 1810
 * Alopias pelagicus Nakamura, 1935 (Pelagic thresher)
 * Alopias superciliosus R. T. Lowe, 1841 (Bigeye thresher)
 * Alopias vulpinus (Bonnaterre, 1788) (Common thresher)
 * Family Cetorhinidae Gill, 1862
 * Genus Cetorhinus Blainville, 1816
 * Cetorhinus maximus (Gunnerus, 1765) (Basking shark)
 * Family Lamnidae J. P. Müller and Henle, 1838
 * Genus Carcharodon A. Smith, 1838
 * Carcharodon carcharias (Linnaeus, 1758) (Great white shark)
 * Carcharodon megalodon (Agassiz, 1843) (Megatooth shark) Extinct
 * Genus Isurus Rafinesque, 1810
 * Isurus oxyrinchus Rafinesque, 1810 (Shortfin mako)
 * Isurus paucus Guitart-Manday, 1966 (Longfin mako)
 * Genus Lamna Cuvier, 1816
 * Lamna ditropis Hubbs & Follett, 1947 (Salmon shark)
 * Lamna nasus (Bonnaterre, 1788) (Porbeagle)
 * Family Megachasmidae Taylor, Compagno & Struhsaker, 1983
 * Genus Megachasma Taylor, Compagno & Struhsaker, 1983
 * Megachasma pelagios Taylor, Compagno & Struhsaker, 1983 (Megamouth shark)
 * Family Mitsukurinidae D. S. Jordan, 1898
 * Genus Mitsukurina D. S. Jordan, 1898
 * Mitsukurina owstoni D. S. Jordan, 1898 (Goblin shark)
 * Family Odontaspididae Müller & Henle, 1839
 * Genus Carcharias Rafinesque, 1810
 * Carcharias taurus Rafinesque, 1810 (Sand tiger shark)
 * Carcharias tricuspidatus Day, 1878 (Indian sand tiger)
 * Genus Odontaspis Agassiz, 1838
 * Odontaspis ferox (Risso, 1810) (Smalltooth sand tiger)
 * Odontaspis noronhai (Maul, 1955) (Bigeye sand tiger)
 * Family Pseudocarchariidae Compagno, 1973
 * Genus Pseudocarcharias Cadenat, 1963
 * Pseudocarcharias kamoharai (Matsubara, 1936) (Crocodile shark)
 * Family Cretoxyrhinidae (Extinct)

Sustainable consumption
In 2010, Greenpeace International has added the shortfin mako shark (Isurus oxyrinchus) to its seafood red list. "The Greenpeace International seafood red list is a list of fish that are commonly sold in supermarkets around the world, and which have a very high risk of being sourced from unsustainable fisheries."