Tabella specie Squali

Tabella specie Squali

Species	Human Attack	Illustration
Blacktip Shark	Ranking: #9
Bull Shark	Ranking: #3
Great White Shark	Ranking: #1
Hammerhead Shark	Ranking: #6
Lemon Shark	Ranking: #12
Nurse Shark	Ranking: #10
Sandbar Shark	Ranking: #18
Tiger Shark	Ranking: #2

Sandbar Shark

(Carcharhinus plumbeus)

Other names:	Thickskin Shark; Brown Shark; Ground Shark; Northern Whaler.
To humans:	Considered dangerous
Distinctive markings:	Wide flat head; husky round gray or brown body; white under belly; big dorsal fin with dark tip (also tip of tail fin dark).
Size:	6.5 feet (2m) to 8 feet (2.4m); 100 pounds (45kg) to 200 pounds (90kg).
What they eat:	Sharks; goatfish; mullet; flounder; skates; grouper (likes fresh fish); octopus; squid; crustaceans; crabs; eels; flatfish.
Where they live:	Tropical water; temperate waters; frequent just beyond breakers in shallow water; sandy bottoms; reefs; moderate depths off shore; estuaries; large bays; annually migrates.
Teeth:	Saw-like; very sharp.
	Human attack ranking: #18 According to the International Shark Attack Files the sandbar shark has been attributed with a total of 7 recorded attacks since 1580 with no deaths.

Nurse Shark

(Ginglymostoma cirratum)

Other names:	None
To humans:	Dangerous if provoked .
Distinctive markings:	Husky body; brown to gray on top; smooth to touch; wide flat head; whiskers(called fangs or barbels) on nose; big rounded dorsal fins; long tail.
Size:	2 feet (0.75m) to 13 feet (4m).
What they eat:	Live coral; octopus; crabs; lobster; bottom-dwelling fish; shrimp; squid; sea snails; sea urchins.
Where they live:	Tropical water; shallow water (sluggish bottom-dwellers) to depths over 200 feet (61m); sandy bottoms; mud-flats coral reefs.
Teeth:	Saw-like; fan shaped.
	Human attack ranking: #10 According to the International Shark Attack Files the nurse shark has been attributed with a total of 27 recorded attacks since 1580 with no deaths.

Lemon Shark

(Negaprion brevirostris)

Other names:	None.
To humans:	Dangerous
Distinctive markings:	Dark yellow back; off white underbelly; big dorsal fins (same size); husky body; wide flat head; big anal fin.
Size:	8 feet (2.45m) to 10 feet (3.1m).
What they eat:	Sharks; bony fishes; guitar fish; mollusks; crustaceans; rays; feed at night.
Where they live:	Tropical water; temperate water; near surface; shallow water (can withstand low oxygenation); reefs (with sea grass); mangroves; bays; river mouths.
Teeth:	Long; narrow; sharp.
	Human attack ranking: #12 According to the International Shark Attack Files the lemon shark has been attributed with a total of 22 recorded attacks since 1580 with no deaths.

Great White Shark

(Carcharodon carcharias )

Other names:	White Shark; White Pointer (Australia); White Death; Blue Pointer (South Africa).
To humans:	Extremely dangerous (largest predatory fish, man eater).
Distinctive markings:	Huge husky torpedo shaped body; long thick nose; large powerful mouth; crescent shaped tail (upper and lower portions of tail equal in size indicating that they swim constantly); gray body; white underbelly.
Size:	12 feet (3.7m) to 16 feet (4.9m) long; up to 7000 pounds (3200 kg).
What they eat:	Seals (largest flesh eater); sea lions; otters; small whales; sharks; fish; turtles; birds; garbage (considered scavenger that will eat just about anything).
Where they live:	Cool shallow water (near coast); temperate water; deep water (off shore).
Teeth:	Triangular; saw-like; extremely sharp; 3 inches (7.5cm) long.
	Human attack ranking: #1 According to the International Shark Attack Files the Great White has caused more deaths than any other species of sharks. Over 67 deaths out 348 attacks have been recorded since 1580.

Great Hammerhead Shark

(Sphyrna mokarran)

Other names:	None.
To humans:	Considered dangerous.
Distinctive markings:	Wide large head (with bumps on nose) that looks like two sided hammer (mallet); round eye on each end of mallet; large tapered dorsal fin that leans to right; grayish brown body; lighter on bottom.
Size:	10 feet (3.1m) to 20 feet (6.1m); 500 pounds (2300kg).
What they eat:	Sharks; skates; stingrays; squid; octopus; fish (sardines, herring, tarpon, jacks, grouper, flatfish); crustaceans; other hammerhead sharks.
Where they live:	Tropical waters; temperate waters; shallow water (shorelines to feed); deep water; drop offs; reefs; sand bottoms; migrates to cooler water in summer.
Teeth:	Saw-like; triangular.
	Human attack ranking: #6 According to the International Shark Attack Files the Hammerhead shark has been attributed with a total of 33 recorded attacks since 1580 with no deaths

Bull Shark

(Carcharhinus leucas)

Other names:	Zambezi; River shark; Freshwater whaler; Estuary whaler; Swan river whaler; Lake Nicaragua shark.
To humans:	Considered extremely dangerous and unpredictable.
Distinctive markings:	Small eyes; short nose; husky gray body; off white under belly; medium sized dorsal fin long tapered back fin.
Size:	7 (2.1m) to 11.5 feet (3.5m) long; 200 (90kg) to 500 pounds (230kg).
What they eat:	Anything that moves (including Dawn); fish; sharks (favorite, baby sandbar sharks); dolphins; rays; mollusks; crustaceans; turtles; birds.
Where they live:	Tropical waters; temperate waters (likes murky and muddy water); (normally found along coastline in shallow waters and by inlets); fresh water; rivers (Ganges/India, 1750 miles (2816km) up Mississippi, Amazon/Peru); lakes (Lake Nicaragua/Central America).
Teeth:	Saw-like and very sharp; typically leaves crescent shaped bite mark.
	Human attack ranking: #3 According to the International Shark Attack Files the bull shark has attributed to 17 deaths out of 82 recorded attacks since 1580.

Blacktip Shark

(Carcharhinus limbatus)

Other names:	None
To humans:	Considered dangerous
Distinctive markings:	Black colored tips on all fins; long tapered nose; small eyes; grayish brown body; white under belly; white bands on sides; white bands on tail.
Size:	Average length, 5 feet (150cm); 40lbs. (18 kg).
What they eat:	Fish (sardines, herring); squid; stingrays; anchovies; crustaceans.
Where they live:	Tropical water; temperate water; sandy coastlines (travel long distances); off shore (not deep); river mouths; estuaries; angroves; bays; coral reefs; drop offs.
Teeth:	Saw-like; long and thin.
	Human attack ranking: #9 According to the International Shark Attack Files the blacktip shark has been attributed with a total of 28 recorded attacks since 1580 with no deaths

Tiger Shark

(Galeocerdo cuvier)

Other names:	None
To humans:	Considered dangerous.
Distinctive markings:	Dark stripes on back and along side that resemble markings on a tiger (stripes fade with age of shark to gray or brownish in color); broad, blunt nose; large wide mouth; husky body; whitish under belly; long tapered back fin.
Size:	10 to 12 feet (3.1m to 3.8m); can get as big as 20 feet (6.1m).
What they eat:	Sharks (including other tiger sharks); turtles; crabs; clams; birds; mammals; reptiles; fish (considered scavenger).
Where they live:	Tropical waters; temperate waters; piers; ports; estuaries (are found close to shore and off shore).
Teeth:	Saw like; razor sharp.
	Human attack ranking: #2 According to the International Shark Attack Files the tiger shark has attributed to 29 deaths out of 116 recorded attacks since 1580.