Specimen of icing shark (Chlamydoselacus anguineus) No Aquário Tropical Palais de la Porte Dorée (Paris)
The Cobra Shark, or Aenga Shark, is one of the strangest creatures of nature. This species of shark, with characteristics similar to those of prehistoric sharks of 80 million years ago, is a biological mystery.
In the dark waters of the deep sea, many peculiar and enigmatic animals live – that few people had the opportunity to observe.
Os jurisdiction They are one of these species. Have been known for over a century, but much of their lives remains mysterious, explains the marine biologist Helen Scales in an article na.
We know how they are through the very few specimens that are occasionally in deep sea fishing nets around the world.
Most of your body brown or gray, with 2 metros length, it is a smooth and finwith a dorsal fin far down on the back, near the elongated tail -like tape.
As Strange Characteristics They are at the end of the head, however. The Media sharks have Six Great Binnial Slips – One more than most sharks.
In fact, there is Only five other living species In the taxonomic order of the Cobre Tubarão, the hexanchiform, which includes sharks of six and seven gills.
The Media Sharks (Chlamydoselacus anguineus) receive their common name in English (Frild Shark) from the uniquely frowned edges of their gill slits, where the extended ends of their gill filaments project.
The first pair of gill slits under your throatmaking it appear to be using lace necklaces.
They also have large mouths, more like lizards than with normal sharks. Inside the mouth, Three -pointed teeth rowssimilar to miniature trident.
When inspecting the stomach content of rare specimens, scientists have found that the sharks use their three-pointed teeth to soft -bodied. They are also known to sometimes eat fish and other sharks.
Pregnant Enga shark females do not lay eggs as some sharks do, but eggs hatch within their bodies-a process known as ovoviviparidade. A shark power begins life as an egg yolk embryo, which uses as a source of nutrition as it grows.
One of the mysteries that has not yet been resolved It is exactly how long its pregnancy lasts. If other deep sea sharks serve as a reference, then they are likely to be At least several years before the offspring offspring emerged in the ocean.
These sharks are often labeled literally, wronglike ‘vivo fossils‘.
In 2022, after one showed rare images of a “living fossil shark” in Japan, it was necessary to clarify that this It was not a prehistoric shark 80 million years old. These animals probably do not live more than a few decades.
It is true, however, that the older known fossils of the dating from the upper cretaceous periodabout 80 million years ago – and have effectively characteristics very similar to those of living specimens, which have not changed much since.
Fossil remains also suggest that the ancestors of the shark shared a similar way to swim in the deep sea.
Thus, we can be sure that unusual -looking sharks were sliding their serpent -like bodies through the dark depths tens of millions of years agoand that their descendants are still at the bottom of the ocean – even as they are rarely seen.
