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Section of the brain of porbeagle shark

Brain

Section of the brain of porbeagle shark

"Dermal dentricles of <em>Centrophorus</em>."&mdash;Finley, 1917

Dermal dentricles of Centrophorus

"Dermal dentricles of Centrophorus."—Finley, 1917

"Lateral view of dogfish (Scyllium catulus). Note ventral mouth with naso-buccal groove, heterocercal tail, and unpaired fins. gs., Gill-slits; pc., pectoral fins; pv., pelvic fins." -Thomson, 1916

Dogfish

"Lateral view of dogfish (Scyllium catulus). Note ventral mouth with naso-buccal groove, heterocercal…

"Shark's egg laid open to show the position of the young fish" &mdash; Goodrich, 1859

Shark's egg

"Shark's egg laid open to show the position of the young fish" — Goodrich, 1859

"Noted for the smoothness of its skin; sometimes called <em>Ray-mouthed Dog</em>; takes bait, but is less rapacious than other species; common on the British coasts." &mdash; Goodrich, 1859

Smooth Hound

"Noted for the smoothness of its skin; sometimes called Ray-mouthed Dog; takes bait, but is…

"Six feet long, and derriving its name from a resemblence of form to the porpoise. Common in European seas" &mdash; Goodrich, 1859

Porbeagle

"Six feet long, and derriving its name from a resemblence of form to the porpoise. Common in European…

"Theses are at once distinguished by their elongated, spindle-shaped bodies, their branchial apertures placed on the sides of the neck, and their pectoral fins of the ordinary form and position. The symmetrical tail is large and fleshy, furnished with powerful fins, which render it a most efficient agent in progression; the nost is usually conical and pointed, the mouth large, and armed with most formidable, cutting teeth, and the upper surface of the head is frequently furnished with a pair of spiracles, although these apertures are often wanting." &mdash; Goodrich, 1859

Shark

"Theses are at once distinguished by their elongated, spindle-shaped bodies, their branchial apertures…

An extensive genus of fishes of the ray family, found widely distributed in the ocean, but most abundantly within the tropics. The body is elongated in most species, the tail thick and fleshy, and the teeth are generally large, sharp, and formed for cutting.

Shark

An extensive genus of fishes of the ray family, found widely distributed in the ocean, but most abundantly…

"Shark is an English popular name for any individual of the group Selachoidei. Sharks are scaleless, and the skin usually rough. They are numerous in tropical seas, becoming scarcer as they recede from the warmer regions, a few only reaching the Arctic circle. They are rapid swimmers, with great power of endurance; the larger sharks are exclusively carnivorous, and some of them extremely dangerous to man. They scent their food from a distance, and are readily attracted by the smell of blood or decomposing bodies. The flesh of sharks is coarse, but it is sometimes eaten. Their rough skin is employed by joiners to polish fine-grained wood, and by cutlers to cover the hilts of swords to make them firmer in the grasp. [Pictured] Egg of Scyllium Chilense"&mdash;(Charles Leonard-Stuart, 1911)

Shark Egg

"Shark is an English popular name for any individual of the group Selachoidei. Sharks are scaleless,…

"Side view of chief cranial nerves of Elasmobranchs." -Thomson, 1916

Shark Nerves

"Side view of chief cranial nerves of Elasmobranchs." -Thomson, 1916

"Siphonal stomach and spiral valve of Basking-shark (Selache). a, esophagus; b, cardiac portion of stomach; c, pyloric portion; d, pouch intermediate between stomach and duodenum, with circular valves at both ends; e, duodenum; f, valve of intestine; g, ductus hepaticus; h, spleen." &mdash; Encyclopedia Britannica, 1893

Shark Stomach

"Siphonal stomach and spiral valve of Basking-shark (Selache). a, esophagus; b, cardiac portion of stomach;…

Two teeth of sharks: "436, Carcharodon angustidens; 435, Lamna elegans." -Dana, 1883

Shark Teeth

Two teeth of sharks: "436, Carcharodon angustidens; 435, Lamna elegans." -Dana, 1883

"Lateral view of caudal vertebra of Basking Shark (Selache mazima). a, centrum; b, neurapophysis; c, intercrural cartilage; d, hemapophysis; e, spinal canal; f, intervertebal cavity; g, central canal for persistent portion of notochord; h, hemal canals for blood-vessels." &mdash; Encyclopedia Britannica, 1893

Shark Vertebra

"Lateral view of caudal vertebra of Basking Shark (Selache mazima). a, centrum; b, neurapophysis; c,…

"Longitudinal section of caudal vertebra of Basking Shark (Selache mazima). a, centrum; b, neurapophysis; c, intercrural cartilage; d, hemapophysis; e, spinal canal; f, intervertebal cavity; g, central canal for persistent portion of notochord; h, hemal canals for blood-vessels." &mdash; Encyclopedia Britannica, 1893

Shark Vertebra

"Longitudinal section of caudal vertebra of Basking Shark (Selache mazima). a, centrum; b, neurapophysis;…

"Transverse section of caudal vertebra of Basking Shark (Selache mazima). a, centrum; b, neurapophysis; c, intercrural cartilage; d, hemapophysis; e, spinal canal; f, intervertebal cavity; g, central canal for persistent portion of notochord; h, hemal canals for blood-vessels." &mdash; Encyclopedia Britannica, 1893

Shark Vertebra

"Transverse section of caudal vertebra of Basking Shark (Selache mazima). a, centrum; b, neurapophysis;…

"Having a body like other sharks, but with a double snout like a double-headed hammer, and having an eye in the middle of each extremity; it is very voracious, and from twelve to twenty feet long." &mdash; Goodrich, 1859

Hammerhead Shark

"Having a body like other sharks, but with a double snout like a double-headed hammer, and having an…

The eight species of hammerhead range from 2-6m long, and all species have projections on both sides of the head that give it a resemblance to a flattened hammer.

Hammerhead Shark

The eight species of hammerhead range from 2-6m long, and all species have projections on both sides…

"Is twelve to eighteen feet long, the tail nearly as long as the body; it uses this member for attacking other animals by its powerful strokes." &mdash; Goodrich, 1859

Thresher Shark

"Is twelve to eighteen feet long, the tail nearly as long as the body; it uses this member for attacking…

"Thresher-Shark (Alopias vulpes)."-Whitney, 1902

Thresher Shark

"Thresher-Shark (Alopias vulpes)."-Whitney, 1902

Sharks belong to the Chondrichthyes family.

White Shark

Sharks belong to the Chondrichthyes family.

"Has the body elongated, swims with great ease, measures from fifteen to twenty feet, is extremely voracious, and has been known to swallow the entire body of a man." &mdash; Goodrich, 1859

White Shark

"Has the body elongated, swims with great ease, measures from fifteen to twenty feet, is extremely voracious,…

An exceptionally big lamniform shark found in coastal surface waters in all major oceans.

White Shark

An exceptionally big lamniform shark found in coastal surface waters in all major oceans.