Miniature shark masterfully produces sashimi of big white relatives
White sharks ( Carcharodon carcharias ), as one of the most feared predators of the planet, a long time ago stand on the top of the food chain. However, it appeared that their flesh becomes a subject of hunting. Moreover, the person not only modest in size, but extremely shy.
So, allow me to introduce the Brazilian luminous shark ( Isistius brasiliensis ). This fish reaches a length of 40-50 centimeters. Its English name “cookiecutter shark”, literally translated as “the shark, which cuts out the cookies”, which humorously reflects the way of her hunting.
The members of this species make daily migrations from a depth of over 3.7 km to the surface at dusk and back to dawn. In this way sharks and intersect with potential victims, including up to the present time were many large fish and marine mammals, including tuna, whales, dolphins, swordfish and even elephants. There are several testimonies of Brazilian sharks bite humans. In addition, the marks of their teeth were found on submarines and communication cables.
In the process of hunting I. brasiliensis are all sorts of tricks. Their tactic is to distract or surprise a victim, to quickly snatch from her piece and quickly leave the scene. Scientists suggest that dark collar around the head of the shark mimics small fish, and abdominal luminous organs hide the rest of the body, making it invisible against the backdrop of the water column.
We should also mention the terrible weapons of I. brasiliensis . after all, they are the owners of the largest number of teeth among all the sharks adjusted for the size of the jaw. In addition, the unique teeth of these predators are fused at the base, forming a kind of sharp scoop, which is perfect for making sashimi. When the victim bites the bait, I. brasiliensis “clings” to her body, pulling the lower teeth a piece and rips it. The wound is quite deep, but flat and smooth, allowing the victim to stay alive.
Such damage and were fixed on the body of a great white shark by a group of Mexican and American biologists. Researchers have found and photographed a young bull with a fresh and lingering wounds near Guadeloupe Islands in the Pacific ocean.
It is amazing that when the tenfold difference in weight categories Brazilian shark can easily eat much more formidable predators, leaving the scene of the meal, not even frightened. In a press release from the University of Florida experts emphasize. what this method of feeding is quite unique and energetic.
“This little fish still remains a mystery for scientists, since the study species have to settle for any dead animals, or the bite marks. Brazilian glowing shark is so elusive that almost no one was seen alive,” concludes one of the authors of the work Janis Papastamatiou (Yannis Papastamatiou ).