jaws

TROPICAL FISH AS A MIRROR OF GLOBAL WARMING

In the far Eastern marine reserve, founded by the Institute of marine biology Feb RAS in 1978 in Peter the Great Bay, met on several occasions fish-aliens from the tropics, but especially frequent were such meetings in recent years.

In August 2001, in the Bay West of the island of furugelma members of the research group during diving excursions met on a sandy shoal flock of small, very mobile fish. After a few days of feeding fish are used to treat and allowed himself to be photographed. It was North of the dog-fish (fugu) Blowfish from the family. They live in the coastal zone; reach a length of 50 cm Due to the special musculature of the pectoral fins of a puffer fish can move not only forward but also backward. Jaw teeth Fugue fused with each other and form in each jaw a pair of inserts separated from the front, it allows them to eat well attached to the substrate organisms-obratitesj. In case of danger fish filled with water or air saccular outgrowths of the stomach and swell, taking a spherical shape. Puffer fish are often toxic in their bodies contain dangerous poison – tetrodoxin. However, purified from the skin and peritoneum and properly cooked meat of these fish is used for food in many countries of South-East Asia, where the dish “fugu” is a delicacy.

Letom here have been found in shallow water Chinese yellowtail, amberjack or big. Seriola are large predators, reaching lengths of over 1 m; live on the continental shelf and form a small but dense aggregations in the water column. Seriali hunt groups for small fish (anchovy, sardine, mackerel), moving quickly from one area to another. In South-East Asia, the juveniles of the amberjack specially podesheveyut networks in obstructed areas of the sea, because the taste of the meat of these fish are highly valued. In the waters of the Gulf of Peter the Great met earlier yellowtail two other species, Golden and yellowtail. Continue reading

Dangerous for human

I will begin with the sharks.

the sand shark reaching a length of 4.3 m, from the squad lunoobraznye. Common in tropical coastal waters of all continents, this shark everywhere behaves quite peacefully and only sand sharks Africa has a bad reputation of man-eaters.

Silver shark (Carcharhinus albimarginatus). Reaches 3M in length with a weight of 160kg. Potentially dangerous: one unprovoked attack on a swimmer.

Blacktip shark (Carcharhinus few). Length 2.5 m, weighs 120kg. Attacks on humans do happen, but none of them serious injuries not ended.

Oceanic, the oceanic whitetip shark (Carcharhinus longimanus) . Around 3.5-4m in length with a weight of 170 kg. Most of the victims of the shipwreck in the open ocean on her conscience.

Korotkoplodnyh Mako shark (Isurus oxyrhinchus) . This is the fastest of all the sharks. Reach a length of 3.2-3.8 m with a maximum weight kg. Considered one of the most dangerous to humans.

Giant hammerhead shark (Sphyrna mokarran) . Is 6.1 m and weigh 450 kg. Several dozen cases of attacks on people,including lethal.

Whale shark (Rhincodon typus) . Up to 18m in length and a weight of 15t or more. Feeds on plankton and is completely harmless. Continue reading

Sharks of the red sea

The red sea has become a byword for divers all over the world. Gorgeous flora and fauna, alluring coral reefs and amazing creatures of the deep sea… If someone raises the question, where better to relax in the summer. the answer is obvious: of course, on the Red sea!

Most importantly, things to be aware of all tourists vacationing in Egypt, and diving is about sharks! What to do and how to behave when you meet them? What kinds of sharks are dangerous and which can serve as the perfect models for underwater photography?

We will discuss the most common species sharks of the red sea, because all there are over thirty species!

Let’s start with the most dangerous species of sharks of the red sea. Topping the list is the tiger shark length from 3 to 6 meters weighing up to 900 kilograms. It eats fish, other sharks, dolphins, sea birds and turtles. However, do not hesitate to take garbage and carrion. There was a case when in the belly of a tiger shark found a hand grenade! Powerful jaws and broad teeth of the saw allow it to deal with any extraction. The appearance corresponds to its name – a large head with large eyes and a blunt snout on a large body, rolling in a long and narrow the tail section, the color is bluish-green, with dark spots and transverse bands. Aggressive and fearless: a few dozen registered dispropotionate tiger sharks swimmers. Continue reading

Golden pond fish
Fish farming, practiced in Ancient Egypt, as evidenced by the sources dated about 2000 BC, over four thousand years ago. In Mesopotamia, in temples the priests kept the fish in…

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Caring for aquarium fish
To care for aquarium fish is not so difficult as it seems at first glance. Much of the problems and errors can be avoided by adhering to the care of…

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TROPICAL FISH AS A MIRROR OF GLOBAL WARMING
In the far Eastern marine reserve, founded by the Institute of marine biology Feb RAS in 1978 in Peter the Great Bay, met on several occasions fish-aliens from the tropics,…

Continue reading →