Sixgill shark

The sixgill shark has six pairs of gills instead of the normal five
Sixgill shark Scientific Classification
Sixgill shark Physical Characteristics
Brown, Grey, Black, White, Green
Up to 80 years
Up to 1,600lbs
Sixgill shark Distribition

The sixgill shark is a quiet killer that tracks the deep and dark seas.

It’s likewise a genus of old primitive sharks which contains 3 unique species. Without a doubt the very best- recognized species is the bluntnose sixgill shark, which can in some cases be observed near Puget Noise or Vancouver Island. Because of their singular and evasive nature, not a whole lot is really understood about their actions.

5 Extraordinary Sixgill Shark Realities!

  • These sharks are taken into consideration to be amongst one of the most ancient of sharks. This implies it maintains some features and adjustments that are mainly the same from the moment it initially progressed some 200 million years earlier.
  • Among the a lot more intriguing truths is that these sharks deliver by means of an approach called ovoviviparity. This is a midway approach in between egg- laying and live birth in which the eggs establish inside the mom’s body up until they prepare to hatch out.
  • Sxigill sharks show up to remain in deep water throughout the day and afterwards move towards shallower waters towards the evening.
  • These sharks show up to have a number of adjustments that make it a lot more resilient. Whereas a lot of sharks should produce lift while relocating with the water to quit from sinking, the sixgill shark can just slide upwards without much initiative.
  • Hexanchoid sharks pick up the globe around them with extremely established aroma and eyes. They can likewise discover resonance and pale electric signals.

Sixgill Shark Classification and Scientific Name

The scientific name of this shark genus is Hexanchus This rather actually implies 6 gills in Latin. They belong to the cow shark family, Hexanchidae, although a lot of various other participants of this family are currently extinct and just understood from the ancient fossil document.

Sixgill Shark Species

There are 3 living species of these sharks, plus 8 even more extinct species discovered in the fossil document.

  • Bluntnose Sixgill Shark: The biggest and most well- recognized participant of the hexanchoid sharks, the bluntnose sixgill has a large distribution throughout the globe, from Patagonia to Alaska, from Puget Noise to the Japanese sea, from the North Sea to southerly Africa.
  • Bigeye Sixgill Shark: Called for its fairly big eyes, this shark is discovered in the Indian Sea and the Western Pacific.
  • Atlantic Sixgill Shark: Previously taken into consideration to be component of the very same species as the bigeye sixgill, this Atlantic shark was identified to be a totally different species in 2018. They are separated by their smaller sized dimension– they do not normally go beyond 6 feet in size– and their Atlantic- based area.

Sixgill Shark Appearance

These sharks are characterized by a wide and sharp head, a lengthy tail, big environment-friendly eyes, a solitary dorsal fin on the back, and comb- like teeth prepared in 6 different rows on each side of the reduced jaw. Without a doubt the most convenient means to determine them, however, is the visibility of 6 gill sets. The majority of sharks just have 5. The skin shade varies in between dark grey, brownish, or olive environment-friendly near the back and lighter grey on the tummy.

Grownup sharks, consisting of the biggest species, the bluntnose sixgill, determine no greater than 20 feet long. The tiniest species is the Atlantic sixgill at 6 feet long. Females have a tendency to be somewhat bigger than males.

A Sixgill Shark swimming off Vancouver Island, Canada.
A Sixgill Shark swimming off Vancouver Island, Canada.

Sixgill Shark Distribution, Population, and Environment

These sharks are discovered throughout warm and exotic seas throughout the globe. They have a tendency to stroll about deep water relatively near continental racks, islands, seamounts, and mid- sea ridges. In cooler settings, like Puget Noise and Vancouver Island, they such as to reside in shallower water.

The bluntnose sixgill and bigeyed sixgill sharks are taken into consideration to be near threatened by the IUCN Red Checklist, with both of their population numbers dropping, while the Atlantic sixgill shark is a species of least concern. The greatest danger is overfishing, both as unexpected bycatch and for food and sporting activity.

Sixgill Shark Predators and Target

The bluntnose shark rests near the top of the aquatic food cycle. In spite of its massive dimension, it does need to watch out for bigger predators.

What consumes the sixgill shark?

A grown-up bluntnose shark is preyed upon by great white sharks and killer whales. Youthful sixgills are likewise preyed upon by dolphins and sea lions.

What does the sixgill shark eat?

These sharks are extremely experienced predators whose diet contains fishes, rays, shellfishes, sharks, and also carrion. While not really quick, it is believed to assail target at close quarters with a fast strike. Whatever it can not ingest entire it will certainly grind up in the rows of sharp teeth.

Sixgill Shark Reproduction and Life Expectancy

Very few concrete truths are understood about the shark’s reproductive actions. It’s hypothesized that the bluntnose sixgill shark recreates at some time in between May and November, and the male perhaps starts courtship by nipping at the female’s gills, which can leave marks. After copulating, the female lugs the eggs for about 2 years up until bring to life a trash of anywhere in between 22 to 110 dogs. The large variety of young recommends it is an adjustment to make up for the really high death price.

The young are relatively well- established presently of their birth, coming up to 30 inches, and should discover to take care of themselves. The moms and dads play no real duty in the growth of the young. These are lengthy- lived animals that expand and develop gradually. It’s hypothesized that a male bluntnose gets to sex-related maturation in between 11 and 14 years of ages, while the female reaches maturation in between 18 and 35 years of ages. Their total life expectancy is approximated to be approximately 80 years in the wild.

Sixgill Shark in Angling and Food Preparation

The bluntnose sixgill shark is captured both readily and for sporting activity with line equipment, gillnets, catches, and trawls. The flesh can be iced up, fresh, or dried out- salted and likewise made use of for oil and fishmeal. The liver of the hexanchoid shark is believed to be hazardous, since intake has actually been understood to trigger discomfort and health issues for approximately 10 days. Also the skin can sometimes trigger health issues.


  1. Florida Museum, Available here:
  2. Animal Diversity Web, Available here:
  3. Sci News, Available here:
  4. Ocean Explorer, Available here:

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