Marine fish actively drink sea salt water, providing the necessary level of water for normal functioning, and excess salt is removed from the body. The exchange of chlorine ions, sodium, potassium between the organism and the environment both in freshwater and marine fishes occurs through special chloride cells located in the gills, but in freshwater they are used to remove metal ions from water, and at sea to remove them from the body. This process is connected with energy expenditure, as occurs against the gradient. Energy is provided by the involvement of sodium and potassium. “Gill pump” that creates the possibility of a permanent replenishment of salts in freshwater fish, has high efficiency and is able to extract sodium and chloride ions from water millimolar and even lower concentration. Table salt since ancient times used in feed for fish as a preservative, to increase the appetite of fish, improve the absorbability, promote growth, and juvenile anadromous fish in which to prepare for the marine period of life. Due to the active exchange of sodium and chlorine with the environment, their constant intake of fish and disposal along with a large volume of liquid fish not afraid of high content of sodium chloride in the feed. Continue reading
In the seas and oceans live the most unusual and alien beings on Earth. And some of them look very scary…
Fish-frog. Found in the Atlantic, Indian and Pacific oceans on muddy or sandy bottom, sometimes burrowing into his eyes. Some members of the family Zapovednaya fish have poisonous spines and are dangerous for swimmers.
This beauty’s name is fish-drop, and it lives only in Australia. Deep-sea benthic fish of the family psychrolutidae, which because of its unattractive appearance often referred to as one of the most bizarre ocean deep-water fish on the planet. The structure of the anterior part of the head gives the impression that the fish are constantly frowns and is unhappy “facial expression” what the fish takes the first place in the rankings of the most bizarre creatures in surveys on the Internet. Continue reading
Underwater world and its inhabitants (underwater civilization that exists parallel to ours) – Earth before the flood: disappeared continents and civilizations
From legend to reality — one step. Underwater civilization in the legends, stories and eyewitness accounts
After the disasters. destroyed the majority lived on the earth reasonable creatures, that they, apparently, long been the main driving force of evolution and progress. Judging by the preserved fragments of the “History of Babylon” the Babylonian priest and historian Beros, who lived in IV—III centuries BC nevative and annedoti have been very supportive and people and taught them the basics of civilization: writing, science, building cities and temples, agriculture, metal processing etc. They come out from under the water under the reign of different “Babel”, “the Assyrian” and “Chaldean” kings. Their contacts with people, according to the testimony of the ancient Greek philosopher Apollodorus (about B. C. 180 — after 120 BC) and disciple of Aristotle Abiden, lasted for 432 thousands of years. Continue reading