Nepedia
Back to Discover
Advanced Reader
🧬

Goblin shark

life science Maturity 5-7 Next article →

The goblin shark, known scientifically as Mitsukurina owstoni, is a rare species of deep-sea shark.

Mistukurina owstoni museum victoria - head detail
Mistukurina owstoni museum victoria - head detail

It is often called a "living fossil" by researchers. This is because it is the only living member of the family Mitsukurinidae. This specific lineage is approximately 125 million years old. The shark has a very distinctive appearance. It features a pinkish skin tone and a long, flat snout. Its jaws are highly protrusible, meaning they can extend far forward. This unique anatomy makes it a fascinating subject for marine biologists studying ancient lineages.

To catch its prey, the goblin shark uses a highly specialized mechanical process. The shark's long snout is covered in ampullae of Lorenzini. These are sensory organs that detect minute electric fields produced by nearby animals. Once prey is detected, the shark uses its jaws like a catapult. Two pairs of elastic ligaments are located near the mandibular joint. These ligaments hold the jaws under tension while they are retracted. When the shark strikes, the ligaments release this tension. This action snaps the jaws forward at high speeds.

Mistukurina owstoni museum victoria - head detail
Mistukurina owstoni museum victoria - head detail

At the same time, a structure called the basihyal drops down. This expands the mouth and sucks in water along with the prey.

The feeding mechanism of the goblin shark is incredibly efficient for a slow swimmer. The combined protrusion of the upper and lower jaws is 2.1 to 9.5 times greater than in other sharks. Interestingly, the lower jaw moves much faster than the upper jaw. It moves at a velocity about two times greater because it swings upward during the strike. The maximum velocity of these jaws can reach 5 meters per second. This rapid movement allows the shark to act as an ambush predator. It can drift toward prey using its large, oily liver for buoyancy. This helps the shark stay neutrally buoyant and avoid detection.

Goblin sharks are found in all three major oceans. They live in the Atlantic, the Indo-Pacific, and the waters around Oceania.

Mitsu
Mitsu

In the Atlantic, they have been recorded from the Gulf of Mexico to Senegal. In the Indo-Pacific, they appear near Japan, Australia, and New Zealand. Most of these sharks inhabit the upper continental slope. They typically live at depths greater than 270 meters. However, adults often live in much deeper waters than juveniles. Some specimens have been found as deep as 1,000 meters. Recent footage from 2024 even suggests they may inhabit even deeper regions.

The history of describing this shark involves some scientific confusion. In 1898, the American ichthyologist David Starr Jordan first described the species. He based his work on an immature male caught in Sagami Bay, Japan. The specimen was originally acquired by the naturalist Alan Owston. Jordan named the species Mitsukurina owstoni to honor both Owston and Professor Kakichi Mitsukuri. For many years, scientists struggled to classify the shark correctly. Because the jaws were often fixed in different positions during preservation, some researchers thought they were seeing different species. Modern science has since corrected these errors through better anatomical study.

While most adults measure between 3 and 4 meters, they can grow much larger.

Mitsu
Mitsu

One enormous female captured in 2000 was estimated to be around 6 meters long. In 2023, a heavily pregnant individual weighing 146 kilograms was landed in Taiwan. This shark was found at a depth of 1,000 meters. The goblin shark primarily eats teleost fishes, such as rattails and dragonfishes.

CoryphaenoidesLeptolepis
CoryphaenoidesLeptolepis

It also consumes cephalopods and various crustaceans. Because it is a rare species, it is currently assessed as "Least Concern" by the IUCN. This is due to its wide global distribution and the low number of sharks caught by fisheries.

Studying the goblin shark provides important connections to the broader field of evolutionary biology. It is classified as the most basal member of the order Lamniformes, which are known as mackerel sharks. This means it represents one of the earliest branches of this group. Genetic studies have confirmed this basal position. The shark retains several primitive traits that have changed in other modern sharks. By looking at its anatomy, scientists can learn about the history of shark evolution. The existence of this species helps researchers understand how life has persisted in the deep ocean for millions of years.

710 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

🖼️ Images & Media (3)
File:Mitsu.JPG
Mitsu.JPG
File:Mistukurina owstoni museum victoria - head detail.jpg
Mistukurina owstoni museum victoria -...
File:CoryphaenoidesLeptolepis.jpg
CoryphaenoidesLeptolepis.jpg
More to explore

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.