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The Blacktip Reef Shark
Conservation Status: Near Threatened (Lower Risk)

Found in shallow water around coral reefs of Indo-Pacific waters, the blacktip reef shark usually swims in water between 20 and 27° C (70 to 80º F). It has been recorded at 2 m (6.5 ft) in length and more than 45 kg (99 lb) in weight. The tips of the shark's pectoral fins and dorsal fin are black, with a white underside. Its skin is brown on the top half of its body. Its snout is rounded and blunt. The gray reef shark looks similar, but can be distinguished by its stockier, grey body and its lack of a black tip on the dorsal fin. The diet of a blacktip reef shark  includes mostly reef fish, but they will also eat rays, crabs, crustaceans, cephalopods, and other mollusks.

The Bull Shark
Conservation Status: Near Threatened (Lower Risk)

The bull shark can be found all over the world in many different areas and has been known to travel long distances. Unlike most other sharks, they tolerate fresh water.  They can be found to a depth of 150 m, but not more than 30 m. Bull sharks are stout and massive. Males can reach 2.12 m (7 ft) and weigh 90.91 kg (200 lb). Females can be much larger: up to 3.49 m (11.5 ft) and 318 kg (700 lb). Bull sharks are wider than other sharks of similar length, and are grey on top and white below. The second dorsal fin is smaller than the first. As bull sharks are carnivores, their diet includes fish, other sharks, rays, dolphins, turtles, birds, mollusks, echinoderms, and crustaceans. Bull sharks have been known to use the bump-and-bite technique when attacking their prey and are solitary hunters.

The Gray Reef Shark
Conservation Status: Near Threatened (Lower Risk)

The gray reef shark, found in Indo-Pacific waters, is mostly gray with a white underside. The tips of most of its fins, except the first dorsal fin, are dark, and there is a prominent black trailing margin on the caudal fin. Some have a white pattern on the leading edge of the dorsal fin. The gray reef shark has been recorded at up to 2.55 m. The blacktip reef shark looks similar, but is distinguished by a black tip on the first dorsal fin. It is found at depths down to about 250 m in lagoons and close to islands and coral reefs. They are active during the day, but more so at night, feeding on reef fishes, squids, octopus, and various crustaceans such as crabs and shrimp. This species is social, aggregating in favored areas, often near dropoffs at the edge of a reef, or in atoll passes where there is a strong current. When threatened they exhibit a distinctive threat behaviour, adopting a hunched posture with the body bent into an "S" shape. The numbers of gray reef sharks have declined in recent years.

The Lemon Shark
Conservation Status: Near Threatened (Lower Risk)

Found mainly along the subtropical and tropical parts of the Atlantic coast of North and South America, the lemon shark can also be found in the South Pacific. The longest lemon shark ever recorded was 12 ft long, but usually they are about 8 to 10 ft (3.0 m). They prefer to stay at moderate depths and prefer tropical water. Lemon sharks are a popular choice for study by scientists as they do well in captivity.

The Nurse Shark
Conservation Status: Least Concern (Lower Risk)

Nurse sharks can grow to be 4.3 m long (14 ft) and a weigh 330 lbs (150 kg). They are able to eat prey larger than their mouths by biting down and slowly sucking the flesh down their throats. A common bottom-dwelling shark, the nurse shark can be found in tropical and subtropical waters on the continental and insular shelves, at depths of one meter or less but can be found all the way down to 12 m. Nurse sharks are nocturnal animals and spend the day in large inactive groups of up to 40 individuals. They hide under ledges or in crevices within the reef and seem to prefer specific resting sites that they return to each day after the night's hunting. The nurse sharks are largely solitary at night as they spend most of their time rifling through the bottom sediments in search of food. They feed on crustaceans, mollusks, tunicates, and other fish, particularly stingrays.

The Silvertip Shark
Conservation Status: Least Concern (Lower Risk)

The silvertip shark is a large and slender shark found near offshore remote island reefs. As its name suggests, it has white marking on all of its fins. It is a dark gray shark with a white belly. Found near reefs at depths to about 800 m, the silvertip shark is found mostly below 30 m. It can grow to a length of 3 m and the max weight ever recorded for this shark is 162.2 kg. They mostly eat benthic and midwater fishes, including rays, small sharks, and occasionally cephalopods.

The Tiger Shark
Conservation Status: Near Threatened (Lower Risk)

The fourth largest predatory shark (after the great white shark, Greenland shark, and Pacific sleeper shark), the tiger shark can be found in many of the tropical and temperate regions of the world's oceans, and is especially common around islands in the central Pacific. Its name comes from the dark stripes down its body, which look like tiger stripes, which fade as the shark matures. It also has dorsal fins that are very close to its tail. Mature tiger sharks average 3.25 to 4.25 m (11 to 14 ft) long and weigh 385 to 909 kg (850 to 2000 lb). The tiger shark is a solitary hunter, mainly hunting at night. Known for eating a wide range of items, its usual diet consists of fish, seals, birds, smaller sharks, squid, and turtles.

The Whitetip Reef Shark
Conservation Status: Near Threatened (Lower Risk)

The whitetip reef shark is found in shallow tropical and warm temperate water around coral reefs in the Indian and Pacific ocean, at depths down to 330 m. The tips of the shark's first dorsal fin and upper caudal fin are white, the upper body is grey/brown, and its head is flat and broad. Their average length is about 140 to 160 cm, with the maximum reported length ever at 2.1 m (7 ft). The whitetip reef shark has a diet consisting of crustaceans, octopusi, and fish, and is a nocturnal, bottom dwelling shark. It is often seen resting on the bottom during the day, often in small groups. It hunts among crevices in the reef at night.

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