Class – Cartilaginous fish / subclass – Plasminogene fish (Elasmobranchii) / Superorder Sharks (Selach)
History of the study
The history of the evolution of hammerhead sharks has been very successful. In our days it is one of the most common shark species in the world, and in some places they’re just going in astounding quantities. Hundreds of individuals run around seamounts.
Few other species of sharks form such large flocks. This is one of the greatest mysteries of the ocean. Why are so many of these sharks gathered in one place, at one time. Oddly enough, in these large schools the majority are female, and we don’t yet know why this happens.
Widely distributed in tropical and temperate waters of all oceans, except, of course, the Arctic. Most commonly found in the Gulf of Mexico and Caribbean sea, near Hawaii, Philippines, New Zealand and many other seas of warm and temperate latitudes.
Hammerhead shark is truly one of the most unusual sharks. Her appearance seems truly alien, but it is quite common in tropical seas around the world.
When you look at the shark hammer head there is just one question – why this animal has this kind of pharmagology? What is it? And how it appeared? After all, nature creates freaks. And if it generates by mistake, they can not compete with “normal” types and die. All the more strange that there are many types of hammerhead sharks of all shapes and sizes, at least 9 different species. Surely nature could make so many mistakes and “give birth” so many freaks, well there are millions of years?! Continue reading
The white shark. or Carcharodon carcharias is the largest dangerous predator of modern sharks. Reaching sizes up to 6 meters in length and weights 2 tons, this bloodthirsty salahiya leaves no chance to rescue anyone.
Carcharodon prefers coastal waters of the continental shelf, where a higher temperature. However, for some populations the waters of the Mediterranean sea is a place of their periodic stay.
It would seem that this sea is considered one of the safest. Should I be afraid of white sharks in the Mediterranean and behave as predators in these warm waters? Let’s face it.
Watch the video “the largest and Most predatory fish – great white shark-killer”:
Is it possible to catch white sharks at popular resorts?
The Mediterranean sea connects with the Atlantic ocean through the Strait of Gibraltar. And in the waters, according to recent reports, the number of “indigenous” populations of white sharks has decreased threefold. Unregulated illegal fishing of carcharodon, as a source of delicious food – the fins, the fat, the liver – led to the fact that white sharks in the Mediterranean are on the verge of extinction.
This can lead to katastroficheskie in all the aquatic systems, because this species plays a significant role in the regulation of the number of inhabitants of the local fauna.
However, nature has taken care of its formidable watch the balance in the ecosystem. Right now, the cases of migration of man-eating sharks from the Atlantic ocean – albeit slowly, but they restore their numbers. Continue reading
Going on a voyage? Want to dive in the warm sea? Don’t forget about your own safety – take the road useful book! It will help you avoid trouble and painful surprises underwater! The unique book in Russian:
The book tells about the dangerous marine animals, able to cause pain, to impair health and even lead to death. The book deals with their appearance, biology, behavior, life cycle, habitat, ways of protection and prevention of attacks, as well as the basics of first aid in case of defeat. Each Chapter is devoted to dangerous animals of a certain type and flowing down thrusting poisonous creatures, passive-poisonous dwellers, predators, etc. In a separate Chapter conducted a thematic review of the most popular seaside resorts as risk areas. The book is richly illustrated and shows the inhabitants of the Ocean, which are of concern to both divers and simple bathers.
The book is intended primarily for divers and tourists travelling to rest at the warm sea, but also anyone interested in the underwater world.
Cost: 250 rubles
This wonderful world is not so harmless!
Plunging under the water, we find ourselves in a different environment, where everything is not like on the surface. Even the usual vital functions and sensations esmeraldabrody follows: what is natural on the earth, it is difficult or even impossible under water – after all, to move, to breathe, to look and listen, we can only with the help of special equipment. Continue reading