Sharks (Selachii) are one of the oldest animal species on earth having outlived the dinosaurs with fossil records dating them back 400 million years. Most sharks live in saltwater environments, although two species can survive in freshwater and saltwater. In their ecosystems, the carnivorous shark is usually the top of their food chain, but are being threatened by human activities and hunting. The largest fish in the world is the Whale Shark, capable of growing to 40 feet (12.2 m) in length. Sharks have multiple rows of teeth that are embedded in their gums instead of their jaws, and are constantly losing and replacing their teeth—sharks can lose and replace up to 30,000 teeth in their lifetime.

How many bones do sharks have?

Sharks do not have any bones in their bodies, as their skeleton system is made up of cartilage and connective tissue. This classifies them as Chondrichthyes fish. Cartilage is flexible and has about half of the normal density found in bones.

What do sharks eat?

The diet of a shark varies from shark to shark depending on the species, habitat, and available prey. There are over 400 species of sharks. Most sharks are carnivorous and predators, while some are planktivorous. Sharks aren’t picky and are able to adjust their diet to what is available in order to survive.


How do sharks sleep?

It is not known if sharks are able to sleep, but they do seem to have periods of rest. Sharks need to keep water moving over their gills to receive oxygen. Some sharks need to keep moving all the times to keep water over their gills, while others have spiracles, an opening behind each eye, that allows them to breath while they are still.

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Sharks Guides
Browse through our curated Sharks Guides for additional categorizations, tips, details, variations, styles, and histories of Sharks. Guides provide additional insights into the unique properties and shared relationships between elements.
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34”-47” | 86-119 cm
5.92’-7.83’ | 1.8-2.39 m
70-180 lb | 32-82 kg
25-35 years
Angel Shark
119.000
239.000
82.000
35.00
21200
3D
Angel Shark
2”-2.4” | 5-6 cm
31”-34” | 79-86 cm
10-19 lb | 4.5-9 kg
9-15 years
Bahamas Sawshark
6.000
86.000
9.000
15.00
150
3D
Bahamas Sawshark
22’-35’ | 6.7-10.7 m
8800-13200 lb | 4000-6000 kg
Up to 50 years
Basking Shark
1070.000
6000.000
50.00
57000
3D
Basking Shark
7.5”-11.4” | 19-29 cm
4.92’-8’ | 1.5-2.44 m
150-270 lb | 68-122 kg
12-16 years
Blacktip Shark
29.000
244.000
122.000
16.00
19200
3D
Blacktip Shark
8.5’-13’ | 2.6-4 m
120-400 lb | 54-181 kg
15-20 years
Blue Shark
400.000
181.000
20.00
16000
3D
Blue Shark
12.2”-25.2” | 31-64 cm
5’-10’ | 1.52-3.05 m
300-440 lb | 136-200 kg
15-25 years
Bramble Shark
64.000
305.000
200.000
25.00
1850
3D
Bramble Shark
7’-11.5” | 2.1-3.5 m
400-700 lb | 181-318 kg
12-25 years
Bull Shark
350.000
318.000
25.00
56000
3D
Bull Shark
1.8”-3” | 4.5-7.5 cm
4’-6.67’ | 1.22-2.03 m
200-300 lb | 91-136 kg
20-25 years
Frilled Shark
7.500
203.000
136.000
25.00
121100
3D
Frilled Shark
5’-12.5’ | 1.5-3.8 m
330-463 lb | 150-210 kg
30-35 years
Goblin Shark
380.000
210.000
35.00
82000
3D
Goblin Shark
21”-34.6” | 53-88 cm
12’-20’ | 3.66-6.1 m
510-1,000 lb | 231-454 kg
20-30 years
Great Hammerhead
88.000
610.000
454.000
30.00
13100
3D
Great Hammerhead
11’-21’ | 3.35-6.4 m
1500-2400 lb | 680-1090 kg
30-70 years
Great White Shark
640.000
1090.000
70.00
133000
3D
Great White Shark
12’-24’ | 3.7-7.3 m
1950-2250 lb | 885-1020 kg
300-500 years
Greenland Shark
730.000
1020.000
500.00
55000
3D
Greenland Shark
6.7”-9” | 17-23 cm
36”-48” | 91-122 cm
20-23 lb | 9-10.4 kg
12-25 years
Horn Shark
23.000
122.000
10.400
25.00
8200
3D
Horn Shark
7.5’-11’ | 2.3-3.4 m
190-400 lb | 86-181 kg
25-35 years
Lemon Shark
340.000
181.000
35.00
27000
3D
Lemon Shark
4’-7’ | 1.2-2.1 m
35-45 lb | 16-20 kg
20-30 years
Leopard Shark
210.000
20.000
30.00
15000
3D
Leopard Shark
4.3”-5.1” | 11-13 cm
54”-59” | 137-150 cm
20-30 lb | 9-13.6 kg
10-15 years
Longnose Sawshark
13.000
150.000
13.600
15.00
380
3D
Longnose Sawshark
13’-18’ | 4-5.5 m
2000-2700 lb | 907-1225 kg
Unknown
Megamouth Shark
550.000
1225.000
28000
3D
Megamouth Shark
7.5’-10’ | 2.3-3 m
200-330 lb | 91-150 kg
15-25 years
Nurse Shark
300.000
150.000
25.00
35000
3D
Nurse Shark
15.75”-20.5” | 40-52 cm
10’-13’ | 3.05-3.96 m
200-370 lb | 91-168 kg
25-36 years
Oceanic Whitetip Shark
52.000
396.000
168.000
36.00
13250
3D
Oceanic Whitetip Shark
19.3”-24” | 49-61 cm
12’-14.5’ | 3.66-4.42 m
700-1,960 lb | 318-889 kg
40 years (minimum)
Pacific Sleeper Shark
61.000
442.000
889.000
40.00
4550
3D
Pacific Sleeper Shark
7.9”-10.25” | 20-26 cm
54”-66” | 137-168 cm
13-35 lb | 6-16 kg
25-30 years
Port Jackson Shark
26.000
168.000
16.000
30.00
14150
3D
Port Jackson Shark
6.5’-10’ | 2-3 m
485-1000 lb | 220-454 kg
20-30 years
Salmon Shark
300.000
454.000
30.00
11000
3D
Salmon Shark
27.2”-33.1” | 69-84 cm
47”-59” | 119-150 cm
27-35 lb | 12-16 kg
25-35 years
Sand Devil
84.000
150.000
16.000
35.00
1190
3D
Sand Devil
7’-10.5’ | 2.1-3.2 m
200-400 lb | 91-182 kg
10-15 years
Sand Tiger Shark
320.000
182.000
15.00
12000
3D
Sand Tiger Shark
3.1”-5.5” | 8-14 cm
24”-42” | 61-107 cm
8-22 lb | 3.6-10 kg
30-40 years
Spiny Dogfish
14.000
107.000
10.000
40.00
11200
3D
Spiny Dogfish
10.5’-20’ | 3.2-6.1 m
500-775 lb | 227-352 kg
20-50 years
Thresher Shark
610.000
352.000
50.00
30000
3D
Thresher Shark
10’-14’ | 3-4.3 m
850-2000 lb | 385-907 kg
15-30 years
Tiger Shark
430.000
907.000
30.00
69000
3D
Tiger Shark
30’-62’ | 9.1-18.9 m
41000-50000 (20.6-25 tons) | 18600-22675 kg
70-130 years
Whale Shark
1890.000
22675.000
130.00
110000
3D
Whale Shark
6.5’-11.5’ | 2-3.5 m
45-65 lb | 20-30 kg
20-30 years
Zebra Shark
350.000
30.000
30.00
7100
3D
Zebra Shark
Greenland Shark
Comparison illustration of the size of a Greenland Shark to a typical person

The Greenland Shark (Somniosus Microcephalus), also referred to as the gurry shark, is a rare species of shark that has a short-rounded snout, small eyes, and between 48 to 52 teeth. Male Greenland sharks are smaller than female sharks. Greenland sharks live in the northern Atlantic and Arctic Ocean.

Greenland Sharks typically eat fish such as sharks, skates, eels, herring, capelin, arctic char, cod, rosefish, and sculpins. They commonly have 10 offspring at a time and are independent since birth. Greenland sharks have the longest known lifespan of all vertebrate species at up to 500 years. Greenland sharks are currently near-threatened by extinction due to hunting by humans.

Greenland Sharks have a total length between 12’-24’ (3.7-7.3 m) and an overall weight in the range of 1950-2250 lb (885-1020 kg). The typical lifespan of the Greenland Shark is a lengthy 300-500 years.

Scaled collection of drawings of Greenland Shark in various poses
The Greenland Shark (Somniosus Microcephalus), also referred to as the gurry shark, has a short-rounded snout, small eyes, and between 48 to 52 teeth. Male Greenland sharks are smaller than female sharks. Greenland sharks live in the northern Atlantic and Arctic Ocean.

Greenland Sharks have a total length between 12’-24’ (3.7-7.3 m) and an overall weight in the range of 1950-2250 lb (885-1020 kg). The typical lifespan of the Greenland Shark is a lengthy 300-500 years.

Scaled collection of drawings of Greenland Shark in various poses
Greenland Shark
Height:
Width:
Length:
12’-24’ | 3.7-7.3 m
Depth:
Weight:
1950-2250 lb | 885-1020 kg
Area:
Speed
Scientific Name
Somniosus microcephalus
Lifespan
300-500 years

Drawings include:

Greenland Shark side elevation, side (perspective), front, top

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Horn Shark (Heterodontus francisci)
Scale illustration of an average Horn Shark with dimensions for height and length compared to a human

A common characteristic of the Horn Shark (Heterodontus francisci) is that it maintains a particular routine. After scavenging close to the shore, it will return to its usual resting place. It belongs to the bullhead family, slow-moving and nocturnal. It is also called bullhead shark, horned shark, or pig shark. Look for it in the coastal waters of the western coast of North America, where you will identify it by its short blunt head, having ridges over its eyes and two high dorsal fins. These dorsal fins have large spines. The Horn shark is usually brown or gray and may have small dark spots. Besides, it is oviparous and only captured for the aquarium trade.

Horn Sharks have a total length between 36”-48” (91-122 cm) and body width of 6.7”-9” (17-23 cm). The typical weight of the Horn Shark is in the range of 20-23 lb (9-10.4 kg). Horn Sharks have lifespans between 12-25 years.

Series of elevation illustrations of the Horn Shark
A common characteristic of the Horn Shark (Heterodontus francisci) is that it maintains a particular routine. After scavenging close to the shore, it will return to its usual resting place. It belongs to the bullhead family, slow-moving and nocturnal. It is also called bullhead shark.

Horn Sharks have a total length between 36”-48” (91-122 cm) and body width of 6.7”-9” (17-23 cm). The typical weight of the Horn Shark is in the range of 20-23 lb (9-10.4 kg). Horn Sharks have lifespans between 12-25 years.

Series of elevation illustrations of the Horn Shark
Horn Shark (Heterodontus francisci)
Height:
Width:
6.7”-9” | 17-23 cm
Length:
36”-48” | 91-122 cm
Depth:
Weight:
20-23 lb | 9-10.4 kg
Area:
Speed
Scientific Name
Heterodontus francisci
Lifespan
12-25 years

Drawings include:

Horn Shark side elevation, side (perspective), front, top

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Lemon Shark
Comparison illustration of the size of a Lemon Shark to a typical person

Lemon Sharks (Negaprion Brevirostris) are sharks recognizable by their yellow skin that helps them camouflage against the sandy waters of their habitat. They live in subtropical waters and are known to return to specific nursery sites to breed. Lemon Sharks often feed at night and use electroreceptors to find their prey.

They eat a variety of fish, rays, crustaceans, seabirds, and other sharks. Lemon sharks live in groups that allow them to have communication, courtship, and protection among one another. They are near threatened with extinction.

Lemon Sharks have a total length between 7.5’-11’ (2.3-3.4 m) and an overall weight in the range of 190-400 lb (86-181 kg). The typical lifespan of the Lemon Shark is 25-35 years.

Scaled collection of drawings of Lemon Shark in various poses
The Lemon Shark (Negaprion Brevirostris) are recognizable by their yellow skin that helps them camouflage against the sandy subtropical waters of their habitat. They are known to return to specific nursery sites to breed. Lemon Sharks often feed at night and use electroreceptors to find their prey.

Lemon Sharks have a total length between 7.5’-11’ (2.3-3.4 m) and an overall weight in the range of 190-400 lb (86-181 kg). The typical lifespan of the Lemon Shark is 25-35 years.

Scaled collection of drawings of Lemon Shark in various poses
Lemon Shark
Height:
Width:
Length:
7.5’-11’ | 2.3-3.4 m
Depth:
Weight:
190-400 lb | 86-181 kg
Area:
Speed
Scientific Name
Negaprion brevirostris
Lifespan
25-35 years

Drawings include:

Lemon Shark side elevation, side (perspective), front, top

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Sand Devil (Squatina dumeril)
Comparison illustration of the size of a Sand Devil to a typical person

The physical characteristics of the Sand Devil (Squatina dumeril) make it resemble skates. It usually has wide pectoral and pelvic fins, a flattened body, a small dorsal fin, an asymmetric caudal fin, and no anal fin. In the middle of its back is a band of enlarged thorns. The upper part of the body is gray with some reddish shading, while underneath is white. These bottom-dwellers rely on camouflage to ambush prey like small invertebrates and bottom-dwelling fish. It is also called Atlantic angel shark or monkfish. This fish is viviparous, rarely aggressive, has no commercial value, and is commonly found in the northwestern Atlantic ocean.

Sand Devils have a total length between 47”-59” (119-150 cm) and body width of 27.2”-33.1” (69-84 cm). The typical weight of the Sand Devil is in the range of 27-35 lb (12-16 kg). Sand Devils have lifespans between 25-35 years.

Scaled collection of drawings of Sand Devil in various poses
The physical characteristics of the Sand Devil (Squatina dumeril) make it resemble skates. It usually has wide pectoral and pelvic fins, a flattened body, a small dorsal fin, an asymmetric caudal fin, and no anal fin. In the middle of its back is a band of enlarged thorns.

Sand Devils have a total length between 47”-59” (119-150 cm) and body width of 27.2”-33.1” (69-84 cm). The typical weight of the Sand Devil is in the range of 27-35 lb (12-16 kg). Sand Devils have lifespans between 25-35 years.

Scaled collection of drawings of Sand Devil in various poses
Sand Devil (Squatina dumeril)
Height:
Width:
27.2”-33.1” | 69-84 cm
Length:
47”-59” | 119-150 cm
Depth:
Weight:
27-35 lb | 12-16 kg
Area:
Speed
Scientific Name
Squatina dumeril
Lifespan
25-35 years

Drawings include:

Sand Devil side elevation, side (perspective), front, top

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Great Hammerhead (Sphyrna mokarran)
Scale illustration of an average Great Hammerhead with dimensions for height and length compared to a human

The ideal areas to catch the Great Hammerhead (Sphyrna mokarran) are tropical and warm temperate waters. It is the largest among all hammerhead sharks and distinguished by the shape and size of its tail, first dorsal fin (sickle-shaped), and hammer, which is wide with a straight front margin. This apex predator is strong, solitary, viviparous, feeding on rays, other sharks, and bony fish. The stout, shark-shaped body is light gray on the surface but cream-colored on the underside. It is also called squat-headed hammerhead, highly valued in commercial and recreational fishing. In commercial fishing, its large fins are a delicacy in the Asian fin trade.

Great Hammerheads have a total length between 12’-20’ (3.66-6.1 m) and body width of 21”-34.6” (53-88 cm). The typical weight of the Great Hammerhead is in the range of 510-1,000 lb (231-454 kg). Great Hammerheads have lifespans between 20-30 years.

Series of elevation illustrations of the Great Hammerhead
The ideal areas to catch the Great Hammerhead (Sphyrna mokarran) are tropical and warm temperate waters. It is the largest among all hammerhead sharks and distinguished by the shape and size of its tail, first dorsal fin (sickle-shaped), and hammer, which is wide with a straight front margin.

Great Hammerheads have a total length between 12’-20’ (3.66-6.1 m) and body width of 21”-34.6” (53-88 cm). The typical weight of the Great Hammerhead is in the range of 510-1,000 lb (231-454 kg). Great Hammerheads have lifespans between 20-30 years.

Series of elevation illustrations of the Great Hammerhead
Great Hammerhead (Sphyrna mokarran)
Height:
Width:
21”-34.6” | 53-88 cm
Length:
12’-20’ | 3.66-6.1 m
Depth:
Weight:
510-1,000 lb | 231-454 kg
Area:
Speed
Scientific Name
Sphyrna mokarran
Lifespan
20-30 years

Drawings include:

Great Hammerhead side elevation, side (perspective), front, top

Details & Downloads

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