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.

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
Blacktip Shark (Carcharhinus limbatus)
Comparison illustration of the size of a Blacktip Shark to a typical person

Unlike other sharks, the Blacktip Shark (Carcharhinus limbatus) is quite timid and would not attack you unless you provoke it. The name comes from the distinctive black markings on its fins' tips. It is medium-sized, possessing a stocky profile, long gill slits, and pointed snouts. In addition, it is white underneath but dark grey to brown on top. The Blacktip shark is viviparous and feeds on benthic fish, rays, and cephalopods. Look for it in brackish water or shallow waters near mangroves, lagoons, estuaries, and river mouths along the tropical and subtropical coasts. Other communities call it blackfin, black-tipped, small blacktip, or spot-fin ground shark. It is commonly targeted in commercial fisheries and by shore anglers.

Blacktip Sharks have a total length between 4.92’-8’ (1.5-2.44 m) and body width of 7.5”-11.4” (19-29 cm). The typical weight of the Blacktip Shark is in the range of 150-270 lb (68-122 kg). Blacktip Sharks have lifespans between 12-16 years.

Scaled collection of drawings of Blacktip Shark in various poses
Unlike other sharks, the Blacktip Shark (Carcharhinus limbatus) is quite timid and would not attack you unless you provoke it. The name comes from the distinctive black markings on its fins' tips. It is medium-sized, possessing a stocky profile, long gill slits, and pointed snouts.

Blacktip Sharks have a total length between 4.92’-8’ (1.5-2.44 m) and body width of 7.5”-11.4” (19-29 cm). The typical weight of the Blacktip Shark is in the range of 150-270 lb (68-122 kg). Blacktip Sharks have lifespans between 12-16 years.

Scaled collection of drawings of Blacktip Shark in various poses
Blacktip Shark (Carcharhinus limbatus)
Height:
Width:
7.5”-11.4” | 19-29 cm
Length:
4.92’-8’ | 1.5-2.44 m
Depth:
Weight:
150-270 lb | 68-122 kg
Area:
Speed
Scientific Name
Carcharhinus limbatus
Lifespan
12-16 years

Drawings include:

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

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Oceanic Whitetip Shark (Carcharhinus longimanus)
Comparison illustration of the size of a Oceanic Whitetip Shark to a typical person

The long, white-tipped rounded first dorsal fins and paddle-like pectoral fins are used to put a name on the Oceanic Whitetip Shark (Carcharhinus longimanus) and separate it from other species of sharks. In other places, it is called lesser white shark, brown shark, silvertip shark, or nigano shark. It is medium-sized, white ventrally and grey dorsally, and fins have white tips. Plus, it has several kinds of teeth. You will mostly find it in the temperate waters of the deep sea, moving slowly and living in solitary. It is highly opportunistic. As a result, a danger to shipwrecked sailors. The Oceanic Whitetip shark is highly valued for its large fins.

Oceanic Whitetip Sharks have a total length between 10’-13’ (3.05-3.96 m) and body width of 15.75”-20.5” (40-52 cm). The typical weight of the Oceanic Whitetip Shark is in the range of 200-370 lb (91-168 kg). Oceanic Whitetip Sharks have lifespans between 25-36 years.

Scaled collection of drawings of Oceanic Whitetip Shark in various poses
The long, white-tipped rounded first dorsal fins and paddle-like pectoral fins are used to put a name on the Oceanic Whitetip Shark (Carcharhinus longimanus) and separate it from other species of sharks. In other places, it is called lesser white shark, brown shark, silvertip shark, or nigano shark.

Oceanic Whitetip Sharks have a total length between 10’-13’ (3.05-3.96 m) and body width of 15.75”-20.5” (40-52 cm). The typical weight of the Oceanic Whitetip Shark is in the range of 200-370 lb (91-168 kg). Oceanic Whitetip Sharks have lifespans between 25-36 years.

Scaled collection of drawings of Oceanic Whitetip Shark in various poses
Oceanic Whitetip Shark (Carcharhinus longimanus)
Height:
Width:
15.75”-20.5” | 40-52 cm
Length:
10’-13’ | 3.05-3.96 m
Depth:
Weight:
200-370 lb | 91-168 kg
Area:
Speed
Scientific Name
Carcharhinus longimanus
Lifespan
25-36 years

Drawings include:

Oceanic Whitetip Shark side elevation, side (perspective), front, top

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Blue Shark
Scale illustration of an average Blue Shark with dimensions for height and length compared to a human

The Blue Shark (Prionace Glauca) is a shark with blue skin coloring for which they were named from. They are often found in deep waters all over the world from in different temperatures ranging from tropical to cold. Blue Sharks have a lethargic nature, but can move very quickly if necessary.

Blue Sharks typically feed on small fish and squid, but can take on larger prey if needed. Female and male Blue Sharks generally live in different places until they have to mate. They can live up to 20 years. The Blue shark is considered to be endangered.

Blue Sharks have a total length between 8.5’-13’ (2.6-4 m) and an overall weight in the range of 120-400 lb (54-181 kg). The typical lifespan of the Blue Shark is 15-20 years.

Series of elevation illustrations of the Blue Shark
The Blue Shark (Prionace Glauca) is a shark with blue skin coloring for which they were named from. They are often found in deep waters all over the world from in different temperatures ranging from tropical to cold. Blue Sharks have a lethargic nature, but can move very quickly if necessary.

Blue Sharks have a total length between 8.5’-13’ (2.6-4 m) and an overall weight in the range of 120-400 lb (54-181 kg). The typical lifespan of the Blue Shark is 15-20 years.

Series of elevation illustrations of the Blue Shark
Blue Shark
Height:
Width:
Length:
8.5’-13’ | 2.6-4 m
Depth:
Weight:
120-400 lb | 54-181 kg
Area:
Speed
Scientific Name
Prionace glauca
Lifespan
15-20 years

Drawings include:

Blue 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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Leopard Shark
Scale illustration of an average Leopard Shark with dimensions for height and length compared to a human

The Leopard Shark (Triakis Semifasciata) is a shark species recognizable by its black pattern markings and large spots along its back after which it was named after. They generally live along the Pacific coast of North America. Leopard Sharks are bottom feeders and typically eat clams, spoon worms, crabs, shrimp, bony fish, and fish eggs.

Leopard Sharks tend to sink when they are not swimming and generally stay by the seafloor. They are very docile to humans and do not pose a threat to attack. Leopard Sharks are currently not in danger of extinction.

Leopard Sharks have a total length between 4’-7’ (1.2-2.1 m) and an overall weight in the range of 35-45 lb (16-20 kg). The typical lifespan of the Leopard Shark is 20-30 years.

Series of elevation illustrations of the Leopard Shark
The Leopard Shark (Triakis Semifasciata) is a shark species recognizable by its black pattern markings and large spots along its back after which it was named after. They generally live along the Pacific coast of North America. Leopard Sharks are bottom feeders.

Leopard Sharks have a total length between 4’-7’ (1.2-2.1 m) and an overall weight in the range of 35-45 lb (16-20 kg). The typical lifespan of the Leopard Shark is 20-30 years.

Series of elevation illustrations of the Leopard Shark
Leopard Shark
Height:
Width:
Length:
4’-7’ | 1.2-2.1 m
Depth:
Weight:
35-45 lb | 16-20 kg
Area:
Speed
Scientific Name
Triakis semifasciata
Lifespan
20-30 years

Drawings include:

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

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