Today our article will be about a very ancient creatures of the animal world that lived before dinosaurs and sharks. So there you go.
• At the moment the science there are about 350 species of sharks, but scientists believe that there are unexplored species.
• The size of sharks vary greatly. The smallest known shark is the dwarf shark glowing. It has a size
no more human hands. The greatest number of sharks include a large whale it often exceeds 10 meters in length. There are reports of specimens 18 and 20 meters. Despite their enormous size, they feed only on plankton and small crustaceans.
• The shark is a fish, moreover it has no bones in his body. The entire skeleton of sharks consists of cartilage.
• In order to breathe, a shark must constantly swim. Continue reading
I was introduced to reader’s letter “Change” V. Karataeva from Voronezh. He writes to the editor: “. In the fall I was vacationing on the black sea coast. Ya big fan of fishing, made friends there with an old fisherman. Once he told me, among other things, that in the Black sea were the whales. But he no details about it does not know. After returning home, I mentioned this fact to my friends in the shop, and I was scoffed at. I ask the editors to help me figure out if there was an old fisherman.”
I remembered that I had read something similar in one of the old magazines.
Indeed, reviewing the magazine “Nature and hunting”, who edited a well-known ichthyologist L. P. Sabaneyev, I found in the may book for 1880 the note, “the Capture of a whale in the Black sea”.
Here are some quotes from it: “In “Novorossiysk Telegraph” reported from Batum the following details of the capture of a whale in the Black sea. Continue reading
Another true dream!)) I bought two lovely goldfish. Now my morning starts when I turn on the light and compressor at the aquarium and watching these wonderful creatures a positive charge for the whole day!)) But, as usual in our latitudes, we first make the purchase and then the panic begin to seek out information as to care, what to feed etc. So, asking the know-all-of Google, I learned that an ancestor of the goldfish is a Chinese carp JI. Zolotarivka derived from silver carp in China almost a thousand years ago, in X-XII centuries. In China and Japan, as a result of long selection received razmechtalsya its forms. In 1611, goldfish were brought to Portuga in Russia.
Currently goldfish – one of semipopular aquarium and pond fish. Continue reading