Galapagos Shark
Carcharhinus galapagensis is an aggressive shark that is dark gray on top, off-white on the belly. It is a benthic (bottom) feeder, eating prey from the ocean floor. Order Carcharhiniformes.

Ganges shark
This is a common name used for two sharks, including Carcharhinus leucas (also known as the Bull shark, the Cub shark, the River shark, the Nicaragua shark, the Zambezi shark, the Shovelnose shark, the Slipway gray shark, the Square-nose shark, and Van Rooyen's shark) and Glyphis gangeticus. Both are large, fierce predators that eat fish (including other sharks) rays, and just about anything else. They have been known to attack people and will venture into fresh water and estuaries.

Gill Rakers
Gill rakers are bristly structures (the bristles are about 4 inches or 10 cm long) in a filter-feeding shark's mouth that catch plankton which the shark then swallows. The whale shark and the basking shark have gill rakers.

Goblin Shark
Mitsukurina owstoni is a rarely-seen, slow-swimming shark that grows to be about 11 feet (3.3 m) long. It has soft, pale, pink-gray skin, a long, flat, pointed snout, low, rounded fins and a long, asymmetrical tail fin. The teeth in the front of the mouth are very long and sharp, the type used for catching fish; the teeth in the back of the mouth are small and used for crushing its prey. Its jaws can project open quickly in order to catch prey. The jaws can protrude during eating, giving the goblin a very unusual look. This bottom-dweller is found in depths of about 3,940 feet (1,200 m) in the western Pacific, the western Indian Ocean and the western and eastern Atlantic. Classification: Order Lamniformes.

Gray Nurse Shark
The gray nurse shark (Eugomphodus taurus) is also known Sandtigers, Ragged tooth shark, the sand shark, and the spotted ragged-tooth shark. They are widespread Mackerel sharks (Lamniformes) that range from gray to brown and are about 10-12 feet (3-3.7 m) long. They are fish-eaters that have long, sharp teeth in a narrow snout. They eat and migrate in groups; their activity peaks at night. They are found mostly near coastlines, from the surface down to depths of 3,900 ft (1,200 m). At birth they are about 3 ft (1 m) long. Classification: Order Lamniformes (Mackerel sharks), Family Odontaspididae (Sandtiger sharks).

Gray Reef Shark
The gray reef shark, Carcharhinus amblyrhynchos, also known as the longnose blacktail shark, is a common shark in the central Pacific Ocean. It averages 6 feet (1.8 m) long but can be up to 8 feet (2.5 m) long. Its tail fin has a dark line along the back edge. The teeth are triangular and serrated. These sharks have an anal fin, 5 gill slits, 2 dorsal fins, no fin spines, a mouth located behind the eyes, and nictitating eyelids. This shark is viviparous, having litters of 1-6 pups after a gestation period of about 1 year. At birth, pups are about 2 feet (60 cm) long. Maturity is reached at 7 years of age (when they are 4.25 feet (1.3 m) long. Classification: Order Carcharhiniformes, Family Carcharhinidae (requiem sharks).

Gray Smoothhound Shark
Mustelus californicus, the gray smoothhound shark, is a harmless bottom dwelling reef shark. It is a mottled gray color and has barbels. It is also known as the dogfish, paloma, sand shark, or gray shark. It forages wide areas of the reef for, worms, clams, crabs, shrimp, octopuses, and small fish. It has short, blunt teeth plus small grinding plates for crushing shellfish. The gray smoothhound reproduces via aplacental viviparity with a gestation period of about one year.

Great White Shark
Carcharodon carcharias is a large oceanic predator, up to 23 feet (7 m) long, weighing over 7,000 pounds (3200 kg) It has 3,000 teeth and eats pinnipeds (sea lions and seals), small toothed whales, otters, and sea turtles.

Greenland Shark
Somniosus microcephalus, also known as the Greenland shark, the sleeper shark and the gurry shark, lives very deep in the North Atlantic Ocean. It lives at depths down to 1,800 feet (550 m) in very cold water (36-45°F=2-7°C). It is up to 21 feet (6.5 m) long. This grayish-brown shark has a short snout and is a slow swimmer. Bioluminescent (glowing) copepods attach to the Greenland shark's eyes attract prey to the shark's head! The shark's upper teeth are long and sharp; the lower teeth are flatter, more closely-set (and also sharp). These sharks gather in large numbers in shallow Arctic waters (up to 80° north) during the winter but migrate back to deep waters during the summer. Eskimo hunters traditionally used its skin for boots and its teeth for knives. This large shark reproduces via aplacental viviparity, having litters of about 10 pups, each roughly 15 inches (38 cm) long. Classification: Order Squaliformes, Family Squalidae (dogfish sharks)

Ground Sharks
A clade of sharks with 5 gill slits, two dorsal fins, an anal fin, no fin spines, the mouth behind the eyes, and nictitating eyelids. The ground sharks include: catsharks, swellsharks, shysharks, houndsharks, weasel sharks, requiem and hammerhead sharks.

Gurry Sharks
Somniosus microcephalus, also known as the Greenland shark, and the sleeper shark, lives very deep in the North Atlantic Ocean. It lives at depths down to 1,800 feet (550 m) in very cold water (36-45°F=2-7°C). It is up to 21 feet (6.5 m) long. This grayish-brown shark has a short snout and is a slow swimmer. Bioluminescent (glowing) copepods attach to the Greenland shark's eyes attract prey to the shark's head! The shark's upper teeth are long and sharp; the lower teeth are flatter, more closely-set (and also sharp). These sharks gather in large numbers in shallow Arctic waters (up to 80° north) during the winter but migrate back to deep waters during the summer. Eskimo hunters traditionally used its skin for boots and its teeth for knives. This large shark is oviviparous, having litters of about 10 pups, each roughly 15 inches (38 cm) long. Classification: Order Squaliformes, Family Squalidae (dogfish sharks).



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