Sleeper Shark

The Greenland shark is one of the longest living vertebrates in the world.
Sleeper Shark Scientific Classification
Sleeper Shark Physical Characteristics
Grey, Blue, White, Light-Brown
Up to 500 years
Top speed
1.6 mph
Up to 2,000 pounds
Sleeper Shark Distribition

The sleeper shark has an anti- freeze healthy protein that allows them to make it through in cool waters.

The sleeper shark is a family of deep- sea predators located throughout the globe. The name of this shark originates from their track record as slow-moving- relocating and slow-moving animals, however some research studies recommend they remain in consistent movement, taking a trip a couple of miles daily along an upright course in the sea. Some smaller sized, a lot more lengthened species from this family are called dogfish. As the name recommends, they have an even more typically fish- like appearance. However, due to their reclusive nature, there is a great deal we still do not comprehend concerning their habits.

3 Unbelievable Sleeper Shark Truths!

  • The sleeper shark has an anti- freeze healthy protein that allows them to make it through in cool waters.
  • Sleeper sharks stay in deep water throughout the day and approaches the surface area in the evening.
  • Some species of sleeper sharks can withstand amazing water stress by diving to midsts of around 12,000 feet.

Sleeper Shark Classification and Family

The sleeper shark family classification is Somniosidae. This is stemmed from the Latin word “Somnus” for rest.

Sleeper Shark Species

There are about 20 identified species of sleeper sharks within the family, spread out throughout 6 various category. These are one of the most well- well-known species:

  • Greenland Shark: Discovered throughout the waters of the North Atlantic and Arctic, the Greenland shark has the lengthiest well-known life-span of any type of species of animals. Based upon the price of development, it’s believed to live in between 250 and 500 years old. It’s likewise among the biggest sharks on the planet.
  • Pacific Sleeper Shark: Belonging To the North Pacific, consisting of Japan and The golden state, this is an additional big and fairly well- well-known species. It is believed to be carefully pertaining to the Greenland shark. The sides of the body consist of sharp teeth- like frameworks that offer a sort of bristly feeling to it.
  • Portuguese Dogfish: Regardless of the name, this species lives throughout the world, from the Atlantic shore of the USA to the southerly waters of New Zealand. It has sharp vision to discover victim in deep water where sunshine does not pass through.


The sleeper shark differs a fair bit in dimension and appearance. The regular species is characterized by a lengthened body varying in between blue- grey and brownish in shade, a spherical nose, and 2 little dorsal fins with or without backs at the base. Several species disappear than a couple of feet in size, however the Pacific sleeper shark and the Greenland shark quickly surpass this. Coming up to 20 feet, these 2 species ranking amongst the biggest sharks on the planet.

This particular shark varies quite a bit in size and appearance
This specific shark differs a fair bit in dimension and appearance. dottedhippo

Distribution, Population, and Environment

Sleeper sharks can be located in deep water seas near continental racks and inclines all over the globe, from the severe north of Greenland to the southerly edges of South Africa. A lot of species choose the cool Arctic or warm waters, however some likewise stay in deep exotic waters. Due to their evasive nature, lots of species have not yet been examined for their conservation status, though numbers might be dropping. The vulnerable Greenland shark has actually been typically targeted for its oil and meat in the Atlantic.

Sleeper Shark Predators and Victim

The sleeper shark is a peak killer in its natural surroundings. It has lots of intriguing adjustments for feeding. The Pacific (and possibly various other species) has a mouth that works as a sort of vacuum cleaner to suck up victim, while the reduced teeth will certainly reduce up whatever food it can not ingest entire.

What consumes the sleeper shark?

Therefore its dimension, the sleeper shark does not have lots of all-naturalpredators It’s believed that the killer whale and some bigger sharks might prey upon them.

What does the sleeper shark eat?

The sleeper shark is believed to eat a wide range of various fish, squid, and various other mollusks, and potentially also seals also. Belly components recommend it might likewise feed on huge squid. Regardless of its slow-moving rate, it might can striking promptly at its victim from a close quarters in a shock assault.

Reproduction and Life-span

Researchers still do not totally comprehend the reproductive behaviors of the sleeper shark. It is believed to replicate by an approach called ovoviviparity in which the eggs create and hatch out within the womb without the aid of a placenta. The size and timing of the reproducing period differ by species, once fertilized, females can lug each child for greater than a year, often generating 10s or thousands of child sharks at once. These are remarkably slow-moving developing and lengthy- lived sharks, a number of them living for loads of years, however the Greenland shark is remarkable also by these requirements. Quotes recommend that the child shark gets to complete maturation at 150 years of ages and meets 500 years old. Their exceptionally reduced metabolic rate and swim rate might represent this remarkable durability.

Sleeper Shark in Angling and Food Preparation

The sleeper shark is not normally eaten by individuals, therefore its evasive nature and rather not fit to eat flesh. Nonetheless, the Greenland shark is searched for food in Iceland and developed into a nationwide recipe called Hákarl. While the shark’s anti- freeze healthy protein is dangerous, individuals have actually located a means to ferment and completely dry the meat to make it risk-free for intake. It has an extremely solid odor and questionable preference that have actually been understood to ward off individuals that eat it for the very first time.


  1. CBC Kids, Available here:
  2. Alaska Department of Fish and Game, Available here:

Relate animals

Abyssinian Guinea Pig

They are one of the oldest breeds of guinea pig

Ackie Monitor

The ackie monitor has a spiny tail which it uses as in self-defense.


The Albertonectes had the longest neck out of other Elasmosaurids.

American Bully

Though the American bully was bred to look intimidating, it makes an extremely friendly family pet!

Latest Animal News