Goblin Shark (Mitsukurina owstoni) Profile and Facts

goblin shark
(Last Updated On: February 19, 2020)

Goblin shark, scientific name Mitsukurina owstoni is a rare species of deep-sea sharks. Sometimes called “living fossils”, the only existing representative of the family is Mitsukurinida, whose lineage is about 125 million years old.

This animal with pink skin has a distinct profile with an elongated, flattened tendency and high extendable jaws with high nails. It is usually between 3 and 4 meters (10 and 13 feet) at maturity although it can be quite large.

Goblin sharks live at depths greater than 100 meters (330 feet) throughout the age of the Upper Continental, submarine lizards, and beaches, with adults, found deeper than adolescents.

The various physical features of the goblin shark, such as its sleek body and small fins, make it a habit.

This species preyed on teleost fish, cephalopods, and crustaceans near the ocean floor and in the middle of the water column. Its long snout is covered in Lorenzini’s ampulla which enables it to sense the minute electric fields produced by nearby prey, it can quickly snatch by expanding its jaws.

A small number of goblin sharks are involuntarily caught in deepwater fisheries. Despite the rarity of the International Union for Conservation of Nature (IUCN), it has evaluated it as a low concern, citing its widespread distribution and low incidence of capture.

Description

During feeding, the jawline of the goblin shark expands dramatically.

The goblin shark has a distinctive long and flat snout similar to a significance blade. As age increases the proportional length decreases eyes are short and lack protective imaging membrane; Spiracles behind the eyes.

Large face-shaped parabolic. The jaws are very muscular and can extend almost to the ends of the snout, though they are usually flush with the lower part of the head. It has 35-55 upper and 31-62 lower tooth rows.

The teeth of the root of the jaws are long and slender, especially near the symphysis (the jaw midpoint) and are finely grooved longitudinally.

The back teeth are small near the corners of the jaw and are flat-shaped for peeling. Different variations of the length and width of the teeth are seen, such that there is a small caplet of the teeth on each side of the main incisor.

About five pairs of gill slits in symphysis or the presence of toothless gaps between the original and the back teeth, the gill filaments are partially exposed; The fifth pair is above the origin of the pectoral fins.

The body is fairly slender and slender. The two dorsal fins are the same in size and shape, both short and round. Weird wings are rather short and round. The pelvic and anal fins have long bases and are larger than the wings on the surface.

The childhood pedan kul is flat on one side and lacks coals or notches. In the asymmetrical inflorescence, the wing has a shallow ventral groove near the tip and a long upper lobe with a lower lobe.

The soft, semi-translucent skin has a rough texture from the dermal denticles, shaped like a small erect spine with Gesu on each length.

The living sharks of this species are pink or tan because of the visible blood vessels under the skin; The color gets deeper with age, and young sharks can be almost white.

The margins of the wings are gray or blue in color and the eyes are black in the blue line in After death, the color fades to light gray or brown. Adult sharks typically measure between 3 and 4 meters (9.8 and 13.1 feet) in length.

However, an enormous female catch, estimated at 5.4–6.2 meters (18–20 feet) long in 2000, found that the species may be much larger than suspected.

The maximum weight recorded is 210kg (460 lb) for the 1.0-m long shark.

Goblin Shark Jaw

Distribution and Accommodation

The goblin shark has been caught in three major oceans, indicating a wide global distribution. In the Atlantic Ocean, it is recorded from the northern Gulf of Mexico, Suriname, French Guiana, and west to southern Brazil and eastern France, Portugal, Madeira, and Senegal.

It was collected from the seabed along the Mid-Atlantic Ridge. It has been found in South Africa, Mozambique, Japan, Taiwan, Australia, and New Zealand in the Indo-Pacific and Oceania. This species has been recorded from the Eastern Cape to Kaikoura Canyon and the nearby Challenger Plateau to New Zealand.

A Southeast Pacific specimen is known to have been collected from Southern California. This species is often found at depths of 270–960 m (890–3,150 ft) over the upper continental opal and has been found to be 1,300 m (4,300 ft) deep and a tooth depth of 1,370 m (4,490 ft) is found in a bottom wire. Is gone Adults live in greater depth than teenagers.

Submarine valleys frequently shark to depths of 100-350 m (330-1১150 ft) in the immaculate Goblin South Japan, with individuals occasionally traveling in coastal waters as shallow as 40 m (3 ft).

Fishermen in Key West, Florida, caught a goblin shark in their fishing net while fishing in the Gulf of Mexico, the second to be caught in the Gulf. The shark was photographed and released into the water.

A goblin shark was found in a fishery net in Sri Lanka near the east coast of Sri Lanka. The shark was about 5 feet (1.2 m) tall and weighed about 5.5 kg (5 lb) and was given to NARA (National Aquatic Resources Research and Development Agency) for further research.

Biology and Ecology

Although the observation of living goblin sharks is inadequate, its anatomy suggests that its lifestyle is inactive and transparent. Its skeleton is diminished and not poorly treated, the muscle blocks (myomeres) of its lateral muscles are poorly developed, and its wings are soft and short.

It is also featured in the slow-moving sharks of a longitudinal fin kept at a long angle. The long snout appears to have a sensitive function, as it contains a large amount of lorenzini that can detect weak electric fields produced by other organisms.

Due to the snout’s softness, it is unlikely to be used to light the prey from below as suggested.

Considering the relatively small optic tectum of the shark’s brain, vision appears to be less important than other definitions.

Yet unlike most deep-sea sharks, it can resize its pupils, perhaps because in some cases it uses its vision. The goblin shark may be the prey of the blue shark (Prionus glauca).

Parasites documented from this species include copepod eththrogalias mitsucurine, and the tapeworms Litobothorium amicathenes and Marsupiobothrium gobelinus.

Upbringing

Rattle and other deep-living teleosts are the staple food of the goblin sharks.

Goblin sharks primarily feed on teleost fish such as rattles and dragonfish. It also consumes cephalopods and crustaceans, including decapods and isopods.

Abdominal garbage was recorded in some samples. Its known prey includes low-living species such as blackberry rose fish (Helicollenus dactylopterus) and middle-water species such as squid Tethonia pellucida and the Astrocaed macrochypridina Castania rotunda.

Thus, the goblin shark appears to be a thief for food, both near the seafloor and above it.

Since it is not a fast swimmer, the goblin shark can be an invasive predator. Its low-density meat and large oily liver make it impulsively lean, allowing it to exit its prey with minimal speed so as to avoid detection.

Once the victim is in range, the shark’s specialized jaws can move forward to capture it. Jaw propagation is facilitated by two pairs of elastic ligaments attached to the mandibular joints, tension when the jaws are in their normal retracted position.

When the sharks bite, the ligaments release their tension and essentially “catapult” the jaws forward at the same time, the advanced basihyal (analogous to a tongue) on the floor of the mouth begins to flatten, enlarge the oral cavity, and suck in water and prey.

Striking and hunting capture events were video-tapped and recorded for the first time between 2008 and 2026, and helped to confirm the use and methods of protrudable jaws of goblin sharks.

It is found that the jaws are certainly unique, using goblin sharks feeding mum, a type of prey capture that is characterized by many mackerel sharks.

What makes goblin sharks unique is their jaw dynamics when feeding. The lower jaw seems to have more complex movements, and it is important to catch the victim.

Measured protrusions of the upper and lower jaws leave the goblin shark jaws 2.1-9.5 times more protrusible than other sharks.

The lower jaw has about twice the velocity of the upper tide because it not only moves forward, the hunting is upward to the catch, and the maximum velocity of the jaw is 3.14 m / s.

During the strike, there is a pattern of reopening and reopening of the goblin shark, a behavior that has never been seen before in other shocks and may be related to the extent to which the goblin shark extends its jaw.

This “slingshot” feeding style may be adapted to compensate for poor swimmers by allowing the goblin shark to catch prey quickly, without hurting the prey.

Physiology

It probably shares the reproductive characteristics of other mackerel sharks, which are separated by smaller litter sizes and embryos that increase during pregnancy by eating undeveloped eggs (olfactory).

The birth size is probably 82 cm (32 inches), the smallest sample length. The males are sexually mature at about 2.6 m (5.5 ft) tall, but the size of the females is unknown. The jaw is connected to three-inch-long flaps of skin that can unfold from its snout.

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