Tiger Shark

Tiger sharks are known to be dangerous even to humans as they attack swimmers (though rarely). But this near-threatened terrifyingly beautiful fish also helps keep the ocean clean by eating almost anything it can sink its teeth into.

Tiger sharks are almost monstrous in size, reaching a length of at least 18 feet and 2000 pounds, making them the fourth-largest shark and second-largest predatory shark, losing only to the Great White. They get their name from the characteristic vertical bars that cover the sides of their body.

Read on to find out what puts them at the top of the food chain even among shark species.

Appearance

Its robust, torpedo-shaped body, reminiscent of a predator built for speed and agility, makes it an unmistakable presence in the marine realm. The most recognizable feature is the series of dark spots and vertical tiger-like stripes adorning its body, earning it the “tiger” moniker. These stripes, particularly prominent in juveniles, gradually fade with age.

Tiger sharks are among the largest and are recorded up to 550 cm (18 ft) long and 2,000 pounds (900 kg).

The shark’s coloration ranges from gray to blue-gray on its dorsal (upper) side, providing camouflage in open water, while its ventral (under) side is typically white or pale yellow. This counter-shading strategy helps it blend in with the bright surface when viewed from below. A relatively short and blunt snout, large, serrated teeth, and prominent eyes complete the tiger shark’s distinctive and formidable appearance.

Habitat

Tiger sharks are commonly found in coastal areas and shallow temperate waters, but they are also known for using the open ocean to travel between islands. They are distributed in all tropical and temperature waters around the globe. 

Juvenile and adult tiger sharks live in different habitats because of predatory habits. Adult tiger sharks are at the top of the food chain and don’t have many predators other than killer whales and humans. For this reason, they prefer the open coast and diverse coral reefs. 

Juveniles, on the other hand, may be eaten by larger sharks and even by adult Tiger Sharks. For this reason, juveniles are usually found living in estuaries and protected bays.

Tiger sharks in Hawaii exhibit both resident and migratory behaviors. Resident sharks often patrol specific areas like reefs or channels, foraging on a variety of prey including fish, turtles, seabirds, and even marine mammals. Migratory individuals undertake long-distance movements, potentially following prey migrations or seeking optimal breeding grounds, with satellite tracking revealing journeys across the Pacific Ocean.

Diet

Tiger sharks are aggressive predators and eat just almost anything they can bite and swallow. They eat almost anything, including other invertebrates, cephalopods, smaller sharks, fish, seals, squid, sea snakes, seabirds, dolphins, stingrays, sea turtles, rays, and crustaceans. Their powerful jaws and sharp, highly serrated teeth allow them to crack the hard shells of turtles and clams. 

Teeth are similarly shaped in upper and lower jaws decreasing in size toward the back of the jaw, toward the corner of the mouth as is the case for most sharks.

They have also been found with many non-food items in their stomachs, like tires, bottles, license plates, plastics, etc that makes it down to the ocean floor. In one way, these scavenger sharks are responsible for keeping the oceans clean.

Reproduction

Tiger sharks mate via internal fertilization and can give birth to up to 80 baby sharks. Baby sharks are born after embryos develop inside individual eggs until they hatch. When they do, the mother gives birth to live juveniles.

It gives birth to live young as do its close relatives the hammerheads and the requiem sharks, but unlike these species, it does not use a placenta to nourish the developing embryos. Instead, tiger shark embryos develop from relatively large eggs in the initial stages of development.

Threats

Tiger Sharks are victims of overfishing for their fins, skins, flesh, and livers that contain Vitamin A. Their reputation as “man-eaters” (though extremely rarely) also makes them a target of population control efforts in some places, much to the disagreements of scientists. 

Conservationists consider tiger sharks to be ‘near threatened’ with extinction not very far from this species.

6 More Good Facts about Tiger Shark

1. Tiger sharks are excellent scavengers with the best eyesight among the shark species and an equally keen sense of smell.
2. Their characteristic dark spots and stripes are most prominent in young sharks and fade as the shark matures.
3. Female tiger sharks have anywhere from 10 to 82 embryos and give birth to an average of 30 to 35 pups per litter.
4. Although other factors come into the matter for the cause of human attacks, Tiger Sharks usually attack swimmers on surfboards.
5. Even though they are known for human attacks, misinformation, and pop culture make it look like human attacks are common with Tiger Sharks when in reality, only 1 in a million humans get attacked by these sharks or any other sharks.
6. They are the garbage disposals of the ocean – eating anything from decayed animals to ocean trash.

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