“Port Jackson Shark” Australian shark has a blunt head with a small mouth, It has distinctive enamel

Port Jackson sharks (Heterodontus portusjacksoni) are discovered within the depths of the Pacific Ocean in Australia.

They belong to the household Heterodontidae and are oviparous in nature. They are often discovered in several colours like fawn, gentle brown, grayish-white, or fully white.

They principally feed on crustaceans and mollusks and are also referred to as oyster crushers as nicely. The embryo of those species is hunted down by different shark species.

They’re predatory in nature however don’t pose any menace to human beings. The Port Jackson shark has its native habitat in temperate South Australian waters.

They’re recognized to swim throughout southern Queensland, Tasmania, after which in the direction of the central coast of Western Australia.

The scientific title for the horn shark is Heterondontus francisci which derives from the Greek phrase heteros, that means completely different; and odont, that means enamel.

Port Jackson sharks are bull-headed sharks which are grey, white, fawn, or gentle brown in coloration. The pinnacle is blunt and the mouth is small.

Their sides and again are lined in distinguished bands of black. Crests are additionally seen above the Port Jackson shark’s eye.

These Australian sea sharks have spiny dorsal fins and an anal fin is current as nicely.

The physique of a Port Jackson shark is elongated and it’s thought of to be the biggest shark within the group of bull-headed sharks.

The Port Jackson shark is the biggest shark within the group of bullheaded sharks.

The common size of a male Port Jackson shark is 3.11 ft and they’re 13.2 lb in weight whereas the females are longer and have a median physique size of three.34 ft and weigh between 31-35 lb.

Sexual dimorphism could be very evident, with females being twice the scale of a male port Jackson shark.

The feminine port Jackson sharks have a physique mass of 31-35 lb, whereas the males weigh from 13.2-22 lb. The females are longer and heavier than the males, displaying sexual dimorphism.

Port Jackson sharks principally feed on sea urchins, mollusks, crustaceans, and different small fish species. The shell of the crustaceans is first crushed by the port Jackson shark after which the mass is swallowed.

Like all different sharks, Port Jackson sharks don’t chew their prey however swallow them complete. They forage in the course of the night time when their prey is most energetic.

In addition they suck sand to catch their prey and blow it out from their gills. The juveniles feed on extra soft-bodied prey than the adults.

Port Jackson sharks’ habitat is deep, temperate waters with rocky environments.

It’s a bottom-dwelling shark that can also be generally discovered close to the shore. Sandy and muddy habitats can be utilized by the Port Jackson shark.

These sharks could be discovered from southern coastal Australia to the central coast of Western Australia. Some species have additionally been discovered as far north as York Sound in Western Australia.

The male port Jackson sharks obtain sexual maturity on the age of round 10 years previous, whereas the females attain sexual maturity on the age of 11-14 years previous.

The style of replica is oviparous, which implies that the females give delivery to stay juvenile sharks after the eggs hatch contained in the physique.

An annual reproductive cycle is seen in port Jackson sharks. The breeding season lasts from the month of August to the second week of November.

After mating, the feminine provides delivery to pairs of eggs each 10 days. The common clutch measurement is 16 eggs.

The mom strikes the soft-shelled eggs to rock crevices or depressions, the place it incubates for the subsequent 10-12 months.

The Port Jackson shark is the biggest species of Heterodontus shark. It has a median lifespan of 30 years in captivity. Some specimens of the Port Jackson shark have lived for greater than 30 years.



Ref: australian.museum, wikipedia, abyss, kidadl, floridamuseum, sharksandrays

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