-
Anonymous users2024-02-13There are two main groups of whales: toothed whales and baleen whales.
Baleen cetaceans, toothless, with baleen and two nostrils, like fin whales, blue whales, humpback whales, gray whales, etc.
Toothed cetaceans, toothed, without baleen and with one nostril, like sperm whales, narwhals, killer whales, etc.
Whales never get lost when they swim the sea, because they have a special ability to have more than 100 million tiny cells in their minds that emit ultrasound waves and receive them to orient themselves. They can also use this ultrasound to notify other whales to call for help or run away together in times of distress. This ultrasound can help them swim in the sea without getting lost, and they can also call for help in time.
The various uses of whales are very beneficial to people, and now that a large number of whales are dying, human beings are also going to extinction, and we need to protect cetaceans and let them continue to live and reproduce. Let people make more advanced instruments according to their benefits, whales are friends of humans.
-
Anonymous users2024-02-12Whales are subphylum of vertebrates and mammals, mainly divided into two categories: baleen whales and toothed whales, with a total of nearly 100 species. Among the more common ones are killer whales, sperm whales, humpback whales, blue whales, melon-headed whales, beluga whales, and so on. Most of them live in the sea, and only a few species live in freshwater.
In China, there are more than 30 species of whales. Different whales have different body shapes, weights, lifespans, and habits.
-
Anonymous users2024-02-11In Greece, the word "whale" stands for sea monster. We divide cetaceans into two groups:
Toothed cetaceans: toothed sea giants such as: sperm whales, orcas, dolphins, porpoises.
Baleen cetaceans: Whiskered whales. In fact, these whiskers are chamfered teeth that grow inside the mouth and are used to filter water and catch shrimp and other small animals that whales eat, and these teeth replace the teeth.
Depending on the species, baleen whales have two different methods of predation.
Degreasing: Beluga whales, like beluga, filter plankton as they swim slowly, with their mouths ajar and water flowing in from the commissure.
Feeding: When this whale approaches a large pool of shrimp on the bottom of the sea, it opens its mouth wide and swallows a large amount of water, which is packed into an extended, folded belly. When the mouth is closed, the whale's tongue reels in the water filtered by the whale's tooth plates. For example, blue whales can swallow 25,000 liters of water at a time.
Every year, some whales leave the food-rich polar oceans in search of warmer waters in order to have offspring. They travel thousands of kilometers over a period of several months in a very certain period. Every winter, many visitors sail thousands of miles to encounter them in the Hawaiian Sea and the Gulf of Mexico.
In the case of sperm whales, males are not allowed to migrate because there is not enough food for the squid in the breeding area.
There are many types of whales, and in general they can be divided into two main categories: one is baleen whales, which have no teeth; One type is toothed whales, which have sharp teeth.
The main types of baleen whales are as follows:
Blue whales, fin whales, fin whales, bigfin whales, plugged whales, small mackerel.
Bryde's whales, northern and southern right whales, arctic whales, gray whales, humpback whales.
Lesser right whale ......
The main types of toothed whales are as follows:
Killer whales (orcas) lesser killer whales, pseudokiller whales, sperm whales, lesser sperm whales.
Pygmy sperm whale Horned whale Beluga whale Northern bottlenose whale Southern bottlenose whale.
Long-limbed pilot whales, short-limbed pilot whales, North Sea beaked whales, Pacific beaked whales, Atlantic beaked whales.
European Beaked Whale, Chu's Mesobeak, Goth's Meso-beaked Whale, Bell's Beaked Whale, Long-toothed Mesobeaked Whale.
Southern Beaked Whale, Peruvian Beaked Whale, Japanese Beaked Whale, Hsieh's Beaked Whale, Goosemouth Whale.
Melon-headed whale ......
Japanese Jumping Dog • Joseph • Pomerania • Akita • American Spaniel • Boeing • Afghan Hound • Lhasa Lion Spaniel • German Shepherd • English Setter • Great Dane • Butterfly Dog • Afghan Hound • Bassett Retriever • Bloodhound • Norwegian Mitti • Foxhound • Irish Wolfhound • Shaq • English Spaniel • Beagle Dog • Scottish Shepherd • Italian Greyhound • Dachshund • Greyhound • Greyhound • Bashangi • Beagle Retriever • Russian Shepherd • Rhodesian Backback Dog • Whippet • Dandy. Vinmont Terrier Portuguese Terrier Springer Spaniel Epizan Boeing Spaniel Italian Braco Golden Retriever Bantam Hardhair Spaniel Labrador Retriever American Terrier English Spaniel - Basset Spaniel Willera Weimarer Spaniel Cocker Spaniel Shedar -Irish Sautter English Setter Universal Terrier Bellingdon Terrier Bird Bulldog Caan Terrier Short-legged Terrier Fox Terrier Boston Terrier Jack Crustal Terrier Kelly Blue Terrier Manchester Terrier Norwich Terrier • Sroucha Terrier • Sirihan Terrier • Western Highland White Terrier • Curly Bichon Terrier • Boston Terrier • Bulldog • Chow Chow • Barley • Barley • Bullmastiff • German Shorthair • Samoyed • Dutch Furrier • Sipakai • Shar Pei • Tibetan Mastiff • Piniel • Mesteve Harra • Hungarian Polly • Akita • Alaskan Malamute • Australian Cattle Dog • Bernese Mountain Dog • Flanders • Boxer • Belgian Shepherd • Long-whiskered Collie • Shag Shepherd • German Duck Dog • German Shepherd · Classical English Shepherd • Jusnazer Terrier • Great Dane • Mastiff • Mastiff • Newfoundland • Flanders • Cattle Spaniel • Great White Bear • Rottweiler • Satsuma • Sheridish Shepherd • Siberian Husky • Welsh Corgi • Braillard • Chihuahua • King Charles Beagle • Shar Pei • Chinese Crested Dog • Butterfly Dog • Miniature Tuck Spaniel • Maltese - Japanese Chung • Yorkshire Terrier • Japanese Fox Dog • English Cocker Spaniel • Japanese Cocker Spaniel • Charlie Terrier • Sheridish Shepherd • Yorkshire Terrier · Shi Dog Pug Pomeranian Reward Peking Dog Self-Defense Dog Lhasa Lion Dog -Shiba Inu Thin Dog Miglu Dog Juan Lady Dog German Shepherd Mestif Hara Golden Retriever Doberman Standard Whippet Dachshund Shak Dog Lingti Chinese Crested Dog Maltese Chihuahua Dachshund Dachshund This is just a part of the There are about 30,000 dogs.
Chocolate is native to South America, where chocolate chips were roasted, crushed and served with herbs and cinnamon to make a drink. When Christopher Columbus brought chocolate back to Spain in 1952, it was discovered that chocolate tasted even more wonderful when mixed with sugar, and a chocolate processing workshop was established in the early 17th century. At that time, chocolate was considered a patent for the enjoyment of the aristocracy. >>>More
Osmanthus is divided into four parts, namely: golden osmanthus, silver osmanthus, red osmanthus and four seasons osmanthus. >>>More
In terms of color classification, there are more than 100 kinds of roses, including red, black, yellow, white, pink, light green, orange, purple, blue, orange, red, etc., but generally speaking, there are five types: red, yellow, white, black, and blue. There are also some roses that are new varieties of roses that are crossed by crossing several common roses, according to statistics, there should be more than 15,000 kinds of officially registered roses, I hope it can help you.
Race, also known as "race", is a group of people with certain common genetic characteristics (such as skin color, hair color, hair shape, eye color, head shape, nose shape, etc.) in physical morphology, and these characteristics are formed by long-term adaptation to the natural environment in a certain area. In the early days of human development, groups of human beings lived in isolation from each other in their natural geographical environments for a long time. Due to the long-term different effects of natural conditions on human beings, as well as the long-term isolation between various groups of people and the underdevelopment of transportation links, the natural physical characteristics of people in different regions are different. >>>More