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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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
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
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
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
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
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
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
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
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
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
Great White Shark
Dimensioned size comparison drawing of a Great White Shark compared to the size of an average human scuba diver

The Great White Shark is a large mackerel shark that is found in coastal surface waters of all the major oceans. The species is also referred to as the great white, white shark, or white pointer for its notable size. Other distinguishing characteristics include its robust, large, conical snout, rows of serrated teeth behind the main ones, and large eyes with deep blue irises.

Further, it displays countershading by having a white underside and grey dorsal area. The great white shark has no natural predators and it is responsible for more recorded human bite incidents than any other shark.

The typical female Great White Shark has an overall length of 15’-21’ (4.57-6.4 m), with males at lengths of 11’-13’ (3.35-3.96 m). An average Great White Shark weighs between 1500-2400 lb (680-1090 kg) and has a typical lifespan of 30-70 years.

Pair of drawings of a Great White Shark as seen from the front and the top views
The Great White Shark is a large mackerel shark that is found in coastal surface waters of all the major oceans. The Great White Shark species is notable for its size and has no natural predators. It is responsible for more recorded human bite incidents than any other shark.

The typical female Great White Shark has an overall length of 15’-21’ (4.57-6.4 m), with males at lengths of 11’-13’ (3.35-3.96 m). An average Great White Shark weighs between 1500-2400 lb (680-1090 kg) and has a typical lifespan of 30-70 years.

Pair of drawings of a Great White Shark as seen from the front and the top views
Great White Shark
Height:
Width:
Length:
11’-21’ | 3.35-6.4 m
Depth:
Weight:
1500-2400 lb | 680-1090 kg
Area:

Length (Male): 11’-13’ | 3.35-3.96 m
Length (Female): 15’-21’ | 4.57-6.4 m

Speed
35 mph | 56 km/h
Scientific Name
Carcharodon carcharias
Lifespan
30-70 years

Drawings include:
Great White Shark side elevation, side (scuba diver), front, plan

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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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Megamouth Shark
Dimensioned comparison drawing of the Megamouth Shark compared to an average person

The Megamouth Shark (Megachasma Pelagios) is a deep-water shark that is distinguished by its large head and mouth with rubber-like lips. It is the smallest of the filter-feeding sharks, following the Whale Shark and Basking Shark. Megamouth sharks are not typically seen as they live anywhere between the water surface and the deep-sea floor.

They live the in the Pacific, Atlantic, and Indian oceans and have been mostly found in Japan, the Philippines, and Taiwan. Megamouth sharks generally eat plankton, shrimp, copepods, pelagic jellyfish. Their life expectancy is not known, but it is believed their age can be determined by counting the growth rings on their vertebrae.

Megamouth Sharks have a total length between 13’-18’ (4-5.5 m) and an overall weight in the range of 2000-2700 lb (907-1225 kg). The lifespan of the rare Megamouth Shark is still unknown.

Set of scaled elevation drawings of the Megamouth Shark
The Megamouth Shark (Megachasma Pelagios) is a deep-water shark that is distinguished by its large head and mouth with rubber-like lips. It is the smallest of the filter-feeding sharks. Megamouth sharks are not typically seen as they live anywhere between the water surface and the deep-sea floor.

Megamouth Sharks have a total length between 13’-18’ (4-5.5 m) and an overall weight in the range of 2000-2700 lb (907-1225 kg). The lifespan of the rare Megamouth Shark is still unknown.

Set of scaled elevation drawings of the Megamouth Shark
Megamouth Shark
Height:
Width:
Length:
13’-18’ | 4-5.5 m
Depth:
Weight:
2000-2700 lb | 907-1225 kg
Area:
Speed
Scientific Name
Megachasma pelagios
Lifespan
Unknown

Drawings include:

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

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Thresher Shark
Dimensioned comparison drawing of the Thresher Shark compared to an average person

The Thresher Shark (Alopias Vulpinus) is a shark species known for its extremely long tail that they use while hunting for food. They can be found along the coasts of North America and Asia in the Northern Pacific Ocean. Thresher Sharks typically eat meat, liver, skin, and fins.

They are not often involved in shark attacks, but are hunted for their skin that is turned into leather and the oil in their liver that can be used for vitamins. Thresher sharks have been identified as vulnerable to extinction since the year 2007.

Thresher Sharks have a total length between 10.5’-20’ (3.2-6.1 m) and an overall weight in the range of 500-775 lb (227-352 kg). The typical lifespan of the Thresher Shark is between 20-50 years.

Set of scaled elevation drawings of the Thresher Shark
The Thresher Shark (Alopias Vulpinus) is a shark species known for its extremely long tail that they use while hunting for food. They can be found along the coasts of North America and Asia in the Northern Pacific Ocean. Thresher Sharks typically eat meat, liver, skin, and fins.

Thresher Sharks have a total length between 10.5’-20’ (3.2-6.1 m) and an overall weight in the range of 500-775 lb (227-352 kg). The typical lifespan of the Thresher Shark is between 20-50 years.

Set of scaled elevation drawings of the Thresher Shark
Thresher Shark
Height:
Width:
Length:
10.5’-20’ | 3.2-6.1 m
Depth:
Weight:
500-775 lb | 227-352 kg
Area:
Speed
Scientific Name
Alopias vulpinus
Lifespan
20-50 years

Drawings include:

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

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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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