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Corals and fish of the red sea

There are on our planet, the sea of extraordinary beauty, attracting millions of tourists from all over the world for its clear water, beautiful corals and diverse fishes. It comes to the Red sea. This is one of the most beautiful places of our planet.

Why do they call it? No exact answer. Someone thinks that it got its name due to algae that in some months, the sea change colour from azure blue to red. And some prefer a more interesting explanation. According to the Bible, Moses led the Jews from Egypt to Israel through the Red sea. When they approached the shore – the water parted and exposing the bottom. It consisted entirely of canyons, cliffs and hollows. The path was very rugged and a lot of Jews died, bleeding to death. That’s why it was called the Red sea.

The red sea is a Gulf of the Indian ocean. It is situated in the deep depression, formed millions of years ago between the Arabian Peninsula and Africa. An area of almost 500 thousand square kilometers, with more than two thirds of the sea is located in tropical zone. The average water depth from 500 m to 1 km in the middle part of the sea is crack, as if dissecting it into two parts. There is a depth of 2.5 to 3 km. makes it different from other seas of our planetat that the Red sea is not no river flows. The Suez canal in the Northern part of the sea – the work of human hands, it is rather narrow, so the natural circulation of water occurs only in the southern part of the sea through the Bab-El-Mandeb.

This natural isolation has led to the fact that in the Red sea the most clear water. Usually the rivers carry their waters in the sea sand, debris and dirty water. But in this sea water is so clear that you can easily see the incredible beauty and diversity of “underwater life” of the red sea.

The absence of influent rivers has also led to the fact that sea has the most salty water among all seas on our planet. The salt concentration here is that to drown is almost impossible. It is well suited for those who decided to learn to swim and likes to swim far away (fatigue less than in the other seas). Continue reading

Marine aquarium – bonding, Assembly

The first work – bonding of sump

The Assembly of the aquarium I started with SAMP. Wanted to kill not just two but several birds with one stone. First, saving money, as the volume of cans was not small, and making the most of your own hands, you can save additional money on high quality equipment and aquatic organisms. Secondly, I wanted to check if I am able to do everything myself. Thirdly, and if I can, then: how will be glued is large and heavy aquarium. This should be checked. So took the glass thickness 8 mm – for the sake of experiment.

Looking glass led to the website of Crystal that cut glass on the laser machine and cut the edge. But the most interesting is the price, it was similar to an ordinary glass cutter. In General, called the office, learned what they need to know for the order, I printed your schematic and on the way to work drove to their office. Custom designed for 40 minutes we discussed all the details thoroughly, talked on related topics. Issue price turned out 2 300 – 2 400 RUB (or rather not remember). After 4 days I called and was told that you can take the glass. Stunned! Everything was Packed in thick cardboard, and if packable 2-3 leaves, all padded with additional cardboard. Sizes are met perfectly…

Buy aquarium sealant and masking tape took place without problems in the near Chkalovsk. And then began the most interesting – we had all the mess and neatly glued together. Wanted the clearances were exactly 1 mm. this value was calculated from all the walls and internal partitions. Two nights was meditating on improvised material – it was necessary to collect a frame (frame), which would allow appending to withstand the required geometry. Continue reading

Why in the Black sea has become a little fish?

Much worse than with the anchovy and sprats. is the case with the number of predatory fish in the Black sea. In the 1980-1990-ies completely disappeared the population of palamidi, tuna and mackerel. According to the hypothesis of the biologist Y. I. Sorokin from Noumea, on the annual migration paths of tuna and mackerel from the Marmara to the Black sea is irresistible “chemical barrier” is a giant city of Istanbul, all the waste of life in the city with a million residents flows directly into the waters of the Bosphorus. Not only Istanbul, but also all other Turkish seaside towns do not have sewage treatment facilities, resulting in pollution of the Black sea domestic and industrial wastewater.

At least 170 million people are living in all black sea countries, a tangible part of their waste of life and activity is in the Black sea.

Sewage of coastal cities, after cleaning, bring in the sea, it is harmless, even useful minerals that promote rapid plant growth. The trouble is that at the end of the twentieth century these nutrient mineral salts got into the Black sea too much, putting it on the brink of environmental catastrophe. Overfeeding marine ecosystems mineral salts is called eutrophication. The result of this, it is possible to observe on primarycontent sea of slime – filamentous unicellular green algae colonial green Alga, generously fueled by domestic sewage Anapa. The day the simplest tangle of seaweed balls almost doubled in size. In July in shallow water from Anapa to Blagoveschenskaya, grew a huge mass of seaweed balls, and reached 7500 tons! Unicellular algae kladofora prevents the growth of sea grass (eelgrass), green underwater meadows of eelgrass once covered all the sandy shallows. Balls unicellular colonial green Alga shade leaves of eelgrass, entangle and strangle its growth. The eelgrass meadow is the most beautiful underwater scenery and most lively habitat for various species of marine animals – crabs crustaceans-hermit crabs, seahorses, sea eagle, shrimp, etc. Continue reading

Safety on the beach

Jellyfish are attacking the Mediterranean. Biologists-marine painters, studying the waters, is known among the most numerous and diverse populations of marine fauna, are sounding the alarm. If these invertebrates will continue to proliferate at such a pace, will not stand not only marine life, but vacationers here in the summer tourists.

According to Professor Stefano Piraino of Salento University in southern Italy, all 300 (!) kilometers of the beach, which he managed to fly on April 21, swarming with jellyfish. Himself Piraino heads the project control the population of jellyfish in the Mediterranean sea. The shift of the biological balance in the waters in favor of the jellyfish is due, firstly, global warming and, secondly, is due to excessive capture of fish and other edible inhabitants. In addition to jellyfish, thousands of miles of the Mediterranean coast there is no release from tourists onlookers. These “scientists with the air of a connoisseur” and armed with smartphones and “Apple”, relentlessly chasing an umbrella. During the four years of work of specialists in the framework of the mentioned project, the population of jellyfish is only increasing. Experts attribute this phenomenon to global warming. Convince them that the data that come from other areas of the world: is there a process develops in a similar way. Piraino says that on the island of Lampedusa, where the annual resting of about three hundred thousand tourists, you can swim only week of the whole summer. The rest of the time the water is filled with jellyfish.

But that said, the biologist, studying jellyfish at the Institute of Oceanology of Barcelona Jose Maria Gili: “jellyfish have increasingly become a problem around the world, the Mediterranean is no exception. And the farther away from the shore, so they are more insidious and harder to fight them”. This spring off the coast of Valencia Catalogue and specialists of the Institute have recorded a surge of population flowing down jellyfish Pelagia noctiluca . which is one of the most poisonous members of the species. Continue reading

Dangerous dwellers of the Mediterranean sea

Upon closer inspection, the monster turned out to be some third-rate, fit only to frighten their young children. In a word, to the Maldives with their tropical abundance of all poisonous reptiles our sea obviously does not hold. However, read it and was horrified. It turns out that affectionate and warm Mediterranean sea just teeming with all sorts of creatures, ready to grab the tender, defenseless body of the swimmer, to wrest from it a piece of meat to poison or, at worst, a painful sting.

However, in 15 years of searching for adventure and snorkeling the biggest trouble that happened to us, is hopelessly corrupt bottoms, on which “spit” ink a startled octopus out of water.

The main principle for anyone wanting to dive into the sea plain and simple, as a rake: “I don’t know – don’t touch” . The more dangerous animals and the more troubles it can cause the bather, the careless behaves closer and admit to myself, naively believing that everyone is familiar with her bad temper and will not touch.
If you sobiratelnitsa on wild stony beaches, to the main principle “don’t touch anything” it would be good to add another special Slippers . no sea urchin is not terrible. Continue reading

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