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The blue whale (Balaenoptera musculus), also known as the blue whale, is a cetacean species of the Balaenopteridae family. Being over 30 meters long and 170 tons, it is the largest animal in our time and, in the present state of our knowledge, the largest (before two large Sauropods, including the Seismosaurus) that have ever lived on Earth.

👉 several groups of French tourists who were in the river boat in Quebec by Zodiac pneumatic motor boat. Long and thin, the body of the blue whale can take various shades of blue-gray on the back and a little brighter underneath. There are at least three distinct subspecies: B. m. Musculus in the North Atlantic and North Pacific, B. m. Intermedia of the Antarctic Ocean and B. m. Brevicauda discovered in the Indian Ocean and in the southern Pacific Ocean. B. m. Indica, discovered in the Indian Ocean, could be another subspecies. Like the other whales, the blue whale feeds mainly on a small crustacean, krill, but also small fish and sometimes squid.

an unforgettable visit to tadoussac in quebec and extraordinary souvenir specimens whale blue whale. Blue whales were abundant in almost all oceans before the beginning of the twentieth century. For nearly forty years they were hunted by the whalers who brought the species to the brink of extinction before it was protected by the international community in 1966. A 2002 report estimated that there were between 5 000 and 12,000 blue whales around the world, located in at least five groups. More recent studies on the subspecies B. m. Brevicauda suggest that this may be an underestimate. Prior to industrial whaling, the largest population was in the Atlantic, which had approximately 240,000 (between 202,000 and 311,000). The species is considered threatened.

Video encounter during their travels in Canada, including a group of tourists living in france who was exploring for the first time on a walk with their close family: The blue whale has a long, slender body that may seem stretched compared to the stocky body of other whales. Its head is flat and U-shaped. A median ridge is drawn between the vents and the tip of the upper jaw. The mouth is densely filled with baleen; About 300 baleen (each about one meter long) of black color hang from the upper jaw, and return about 0.5 meter inside the animal’s mouth. Between 60 and 90 furrows (called ventral folds) run along the throat parallel to the body. These folds facilitate the evacuation of water from the mouth after taking food. The dorsal fin is small and visible only briefly during the dive sequence. Located about three-quarters of the body of the animal, its form varies from one individual to another; In some individuals it presents itself as an almost imperceptible bump, but others have a prominent and falciform dorsal fin.

le fleuve Saint-Laurent et qui a filmé une top vidéo rencontre extraordinaire avec des baleines rorqual le dimanche 31 Juillet 2016. Quand elle fait surface pour respirer, la baleine bleue élève son évent hors de l’eau avec une plus grande ampleur que d’autres grandes baleines telles que le rorqual commun et le rorqual boréal. Cette caractéristique peut être utilisée pour la différencier des autres espèces en mer. Certaines baleines bleues de l’Atlantique Nord élèvent leur nageoire caudale quand elles plongent. L’eau soulevée par l’air qu’expire la baleine après une plongée atteint généralement 9 mètres, mais peut aller jusqu’à 12 mètres, et peut être vue de loin par temps calme. Les baleines bleues ont des évents jumeaux, protégés par un repli de fibres graisseuses. De puissants muscles en actionnent l’ouverture.

During an excursion aboard the Zodiac boat, the group of tourists coming from france sailed peacefully on the St. Lawrence River in Tadoussac, Quebec. The fins measure three to four meters. The upper faces are gray with a thin white border. The lower faces are white. The head and tail are generally uniformly gray. The upper part of the whale, and sometimes the fins, are generally spotted. The importance of these spots varies significantly from one individual to another. Some may be of uniformly gray-slate color when others show significant variations of dark, gray and black blues in a mottled pattern.

Tourists were able to observe several specimens of whales including a fin whale which approached the inflatable boat before passing under its entire length. Blue whales can reach a speed of 50 km / h during short accelerations, especially during frolics with other whales, but their cruising speed is 20 km / h. When they feed, they slow down to 5 km / h.

An unforgettable French souvenir for the people present aboard the boat. The blue whale is difficult to weigh because of its large size. Most of the blue whales killed by the whalers were not weighed whole but after being cut into pieces easier to manage. This causes an underestimation of the total weight of the whale due to the loss of blood and other fluids. Nevertheless, masses varying between 150 and 170 tonnes were recorded on animals up to 27 meters in length. The weight of a 30-meter individual is estimated to be over 180 tonnes by the National Marine Mammal Laboratory (NMML). The biggest blue whale weighed accurately by NMML scientists to date is a 177-tonne female. The whale can reach such weights because it is a marine animal. Indeed, water helps her to support her weight, otherwise her bones would not be resistant enough and she would collapse on herself.

Especially since with its average length of 20 meters, whales whale is the second largest living animal on the planet after the blue whale that can exceed 30 meters. The blue whale is considered to be the largest animal ever on Earth. The largest known dinosaur of the Mesozoic era was Argentinosaurus, whose weight is estimated to be about 90 tons, although a controversial vertebra of Amphicoelias fragillimus could reveal an animal close to 122 tons and 40 to 60 meters. Moreover, the Bruhathkayosaurus dinosaur could have reached 175 or 220 tons, but this estimate is not certain, the fossils recovered being too fragmented. The extinct fish Leedsichthys might have approached this size. However, it is difficult to obtain complete fossils, making size comparisons difficult. All these animals are considered to be less heavy than the blue whale.

Big fright aboard UN Zodiac. Scary monster in the sea. However in terms of length, it does not hold the record. In Scotland, a marine worm (The Laceworm Lineus longissimus) has already been discovered, more than 50 meters long. There is also the Medusa with a lion’s mane, or the giant siphonophore, both exceeding the 40 m long. On Earth, fossils of sauropods such as Amphicoelias or Bruathkayosaurus suggest sizes approaching 50 meters.

The whales whale giant this make very rare when they appear. There are a number of uncertainties about the largest blue whale ever encountered, as most of the data come from blue whales killed in Antarctic waters during the first half of the twentieth century and Were collected by whalers who had little knowledge of the standards of technical measures in zoology. The longest blue whales ever measured were two females measuring 33.6 and 33.3 m respectively. The longest whale measured by scientists at NMML was 29.9 m3.

The head of the blue whale is particularly wide compared to that of other species of whales. Moreover, its head represents almost a quarter of the total length of the whale. The blue whale has between 63 and 65 vertebrae, distributed as follows: 7 cervical, 15 to 16 dorsal, 14 to 16 lumbar and 26 to 28 sacral. It has 15 pairs of ribs, only one of which is articulated on the sternum.

 

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