As far as the entire marine mammals are concerned, whales have the largest number of species and the largest number. Whales can be divided into two categories: one is those that have no teeth in their mouths and only have baleen, which are called baleen whales; the other are those that have no baleen in their mouths and still retain teeth, which are called toothed whales. Although there are few types of baleen whales, their huge bodies have made them the main targets of human capture. Among them are blue whales with huge and incomparable bodies, slow-moving right whales with big heads and fat bodies, and short-bodied and long-armed whales that like to swim close to the coast. , humpback whales with funny movements, minke whales with small bodies and pointed beaks, and so on. There are many types of toothed whales. Except for sperm whales, the rest are generally smaller, such as the extremely ferocious killer whales and dolphins. Although the bodies of whales vary in length and thickness, they are all streamlined and look like fish, so people often call them whales. However, whales are beasts. Like humans, it constantly surfaces to breathe air. Sometimes we can see white mist columns ejected by whales when they exhale on the sea. Some are more than ten meters high and look like fountains, which is very spectacular.
Whales are mammals that live in the water throughout their lives and are so dependent on water that they cannot live without the water. In order to adapt to life in the water and reduce resistance, their hind limbs disappear and their forelimbs become paddle boards for paddling. The body becomes streamlined and resembles a fish. Therefore, their diving ability is very strong. Dolphins (small toothed whales) can dive to a depth of 100-300 meters and stay for 4-5 minutes. Fin whales can stay 300-500 meters underwater for an hour. Whale--Sperm whale can dive to less than 1,000 meters and stay in the water for up to 2 hours. In 1955, a sperm whale was found entangled in a submarine cable in the sea near Ecuador. Its diving depth reached 1,133 meters. A sperm whale was found entangled in a cable and suffocated at a depth of 2,200 meters in the waters near Lisbon, the capital of Portugal. This is the deepest diving record for a mammal so far.
animal tags：
you may also like
The Chinese white dolphin is also known as the Chinese white dolphin and Pacific hump dolphin. The snout is long and narrow. The dorsal fin is low and triangular in shape, with a long base and a blunt tip. Fins short and wide. The trailing edge of the caudal fin is concave, with a deep notch....
There are 18 species of penguins living in the world, including little white-fingered penguins, white-fingered penguins, yellow-eyed penguins, Magellanic penguins, Peruvian penguins, Galapagos penguins, emperor penguins, king penguins, Adrien penguins, and Antarctic penguins. , gentoo penguin...
The common name of Jiajiri fish: golden towel. There are 8 black-edged blue-purple horizontal bands on the side of the body, with both ends of the bands slightly bent backwards. Body length 14 cm. Distribution areas: South China Sea; Taiwan waters, Red Sea, Indian Ocean and western Pacific tr...
Peru is located on the southeast coast of the Pacific Ocean, with a coastline of more than 2,200 kilometers. The coast of Peru is a famous fishing ground in the world. In the 1950s, Peru's fishery output reached hundreds of thousands of tons. After 1962, the fishery developed even faster, wit...
The butterfly fish has a small mouth and a prominent snout. The dorsal fin has powerful spines, with the fourth spine being the longest. The anal fin has three strong spines. There is a large round blue spot with a white edge on the front and lower part of the dorsal fin ray. There are 4 yell...
The checkered butterfly fish has flat sides. The snout is pointed, with the front end protruding slightly forward. The body is covered with weak comb scales. The edges of the scales on the side of the body have dark lines and are connected to each other in a reticulate pattern. There is a bla...
Jellyfish are a kind of strange creatures, and their food source is relatively special. In order to feed jellyfish, you need to provide them with suitable food. The following is a detailed introduction to jellyfish food:1. Plankton: Jellyfish mainly feed on plankton, such as phytoplankton, small zoo...
In the blue ocean, there are many beautiful and transparent jellyfish living in it. They float in the sea like parachutes one by one, and their graceful appearance is amazing. The sky-blue sail jellyfish has a transparent "sail" erected on its back, which is bumpy in the sea like a small boat...
Email: jsset#163.com (change # to @) Please indicate your purpose of visit! Guangdong ICP No. 2022053326 XML| map| Chinese
