Blue whales are powerful, why are there so few blue whales?

Because humans are constantly hunting blue whales,

There are no complete statistics.

In 1966, the International Whaling Commission declared a blue whale.

It is the object of protection of the ban on fishing. There were at least 200,000 blue whales before they were developed, and now it is estimated that there are up to 13,000. According to a statistical report published by the International Whaling Commission in 1989, there are now only 200,453 survivors of blue whales.

Brief introduction. The blue whale (scientific name: balaenoptera musculus) is a marine mammal.

It belongs to baleen whales. Suborder. There are four subspecies.

The blue whale is believed to be the largest animal known to have ever survived on Earth, reaching up to 33 meters long and weighing up to 181 tons. The blue whale has a long and slender body and a blue-gray back, although it can sometimes look lighter in the water.

Like other baleen whales, blue whales feed mainly on small crustaceans such as krill.

Feeds on small fish, sometimes including squid. Blue whales usually feed at depths of more than 100 meters during the day and come to the surface at night. Blue whales begin mating in late autumn and continue until late winter, with females usually giving birth every 2-3 years after 10-12 months of gestation.

After that, they usually give birth to calves at the beginning of winter. Four oceans.

are all distributed.

This is mainly due to human hunting and environmental contamination.

The number of blue whales killed was growing rapidly around the world, and by 1925, the United States, Britain and Japan had joined the ranks of killing blue whales following Norway's lead by using "whaling ship mammoths" to lift the blue whales to huge "factory ships" for processing. In 1930, 41 ships slaughtered a total of 28,325 blue whales.

Potential human threats to blue whales include the manufacture of the chemical polychlorinated biphenyl (PCB) that accumulates in blue whales. In 1960, 350,000 blue whales had been killed due to human hunting and pollution of the marine environment, and the world's population had declined to less than 1% of what it was 100 years ago. There are only fewer than 50 blue whales in the world.

How big is the largest animal ever on Earth, the blue whale? It may be much more than you think.

The general body length is 22-33 meters.

An adult blue whale can grow up to about 30 times the body weight of an African elephant. The average length of a blue whale is about 25 meters, with the highest record being around one meter. Females are larger than males, and southern blue whales are larger than northern blue whales.

Viewed from above, the snout is wide and flat. The dorsal fin of the blue whale is small, about a meter high, and it is located in 1 4 places behind the body. The flippers are smaller, accounting for 15% of the body length.

The caudal fin is 1 3 to 1 4 wide in body length, and the posterior margin is straight. There are 55-88 stinging grooves, the longest reaching the umbilicus. 270-395 whiskers on each side.

The dorsal body is dark pale grayish-blue, the ventral surface is slightly lighter, and the mouth and beard are black.

It is divided into the following three subspecies: Intermedia Burmeister (1871) Southern blue whale is found in the Southern Hemisphere; The female of the southern blue whale is 23 24 m long, the male is 22 m long, and the body length of the mature body is 26 27 m and 24 25 m, respectively. Northern Blue Whale (Musculus Linnaeus, 1958) The Northern Blue Whale is found in the North Atlantic and North Pacific Oceans. The female of the northern blue whale is 21 23 m long, and the male is 20 21 m long, and the body matures at 25 and 24 m long, respectively. Brevicaukta Ichihara, 1966 Brevicaukta Ichihara, a small blue whale found in the subantarctic waters of the Indian Ocean and the Southeast Atlantic.

The female is 19 m long, the male is slightly less than 19 m long, and the male is 22 and 21 m long, respectively. The blue whale is the largest baleen whale, the longest being a female whale caught in Antarctic waters between 1904 and 1920, with a length of 170 tons. Please refer to the details for details.

The general body length is 22-33 meters.

An adult blue whale can grow up to about 30 times the body weight of an African elephant. The average length of a blue whale is about 25 meters, with the highest record being around one meter. Females are larger than males, and southern blue whales are larger than northern blue whales.

Viewed from above, the snout is wide and flat. The dorsal fin of the blue whale is small, about a meter high, and it is located in 1 4 places behind the body. The flippers are smaller, accounting for 15% of the body length.

The caudal fin is 1 3 to 1 4 wide in body length, and the posterior margin is straight. There are 55-88 stinging grooves, the longest reaching the umbilicus. 270-395 whiskers on each side.

The dorsal body is dark pale grayish-blue, the ventral surface is slightly lighter, and the mouth and beard are black.

Blue whales are believed to be the largest animals known to have ever survived on Earth, reaching up to 33 meters long and weighing more than 200 tons.

An adult blue whale can grow up to about 30 times the body weight of an African elephant. The largest blue whale weighs 197 tons (body length meters), and the average length of blue whales is about 25 meters, with the highest record being around meters. Females are larger than males, and southern blue whales are larger than northern blue whales.

In the first 7 months of its life, a blue whale drinks about 379 litres of breast milk per day and gains 91 kg every 24 hours. An adult blue whale can eat more than a ton of krill per day.

The blue whale is the largest animal in the world and has a blue-gray color all over its body. The largest blue whale catch so far is near the Falkland Islands in the Atlantic Ocean. This blue whale is meters long and weighs 195 tons, which is equivalent to the weight of 35 elephants.

Its tongue weighs about 3 tons, its heart weighs 700 kilograms, its lungs weigh 1,500 kilograms, its blood weighs about 8 tons 9 tons, and its intestines are half a mile long. Such a large body can only live in the vast ocean.

The blue whale (scientific name: balaenoptera musculus) is a marine mammal belonging to the suborder Baleen Whales. The blue whale is believed to be the largest animal ever to live on Earth, reaching a length of up to 33 meters and weighing up to 160 tons.

The blue whale has a slender body and a blue-gray back, although it can sometimes be lighter in the water. At least three subspecies of blue whales are known to exist: b. b., which lives in the North Atlantic and North Pacific

m. musculus；B. inhabiting the Southern Ocean m.

Intermedia with the Indian Ocean and the South Pacific B m.brevicauda (also known as pygmy blue whale).

B. found in the Indian Ocean m.Indica may be another subspecies.

Like other baleen whales, blue whales feed mainly on small crustaceans (such as krill) and small fish, sometimes including squid.

Different species of whales weigh differently, but the blue whale is the "world's largest", with an adult blue whale weighing about 181 tons.

The hatchlings of blue whales are about meters long and weigh about 6 tons.

Sperm whales weigh about 500 kilograms; Humpback whales weigh 25 30 tons; Killer whales weigh about 9,000 kilograms.