Order a spindle-shaped body of a whale. The body size is large. Virtually hairless. Braver. There are no sebaceous glands. The tail flattened on the dorsoventral side to flukes. The forelimbs are changed to flippers. Trace hind limbs. The term whale in biological terms means a whale or (originally) a large marine animal. There are three types of marine mammals that make up cetaceans, such as whales, dolphins, and harbor porpoises, and external pigmentation is important for many animals as the basis for individual and species recognition. Hair defines the color pattern of most mammals, but whales have very few hairs, so the outer layer of skin (epidermis) most commonly produces markings in shades of black and white. Due to the low osmotic pressure of whales with respect to the surrounding environment, body fluids tend to lose water by permeation and conserve salt by diffusion. In cetaceans, drinking seawater cannot compensate for water loss. Cetaceans are the largest group of hairless mammals made up of animals such as whales, dolphins and porpoises, and the concentration of urine saves water in the body. This makes sense because hair isn't very useful for the aquatic lifestyle. Instead, these creatures insulate themselves with a thick layer of fat. All cetaceans show hair as a foetation on the head, but eventually they are lost.
Characteristics of cetaceans Cetaceans are mammals, endothermic (generally called warm-blooded animals), and their body temperature is about the same as that of humans. They live as young as we do and give birth to breathe air through the lungs. They even have hair.
What is a whale biologically?
In biological terms, the term whale means a whale or (originally) a large marine animal. There are three types of marine mammals that make up cetaceans, such as whales, dolphins, and porpoises. The term whale can be used to refer to all cetaceans, but usually excludes dolphins and porpoises in order
Why whales have black and white skin Are you there?
Body surface. Hair defines the color patterns of most mammals, but whales have few hairs, so the outer layer of skin (epidermis) most commonly produces markings in shades of black and white. The appearance of some cetaceans is influenced by a variety of organisms that live on or within the skin.
How do whales adapt to the environment?
Some cetaceans, such as the beluga whale (Delphinapterus leucas) and the narwhal (Monodon monoceros), live in the peripolar sea and adapt to these low temperatures. Other pilot whales, such as the long-finned pilot whale (Globicephala melas) and the short-finned pilot whale (Globicephala macrorhynchus), live in warm tropical waters.
Are there any whales that are hairy or greasy?
All cetaceans are greasy, but most species are hairless or at least almost hairless. Cetaceans that have hair lose it shortly after birth, but they can maintain their hair follicles even after they lose their hair.
What are the common characteristics of cetaceans?
Although body sizes vary, all modern cetaceans are relatively similar in shape. There is a horizontal tail flak used in swimming. Their forelimbs are flippers. There are no external hind legs. Their necks are short and their bodies are streamlined.
What are some of the characteristics that reveal cetacean mammals?
The ancient Greeks recognized that cetaceans breathe air, live young, produce milk, and have hair. Mammal characteristics. However, due to their shape, cetaceans were generally grouped with fish.
What are the physical characteristics of whales?
They are mammals and share the distinctive characteristics of their group. They breathe air, are warm-blooded animals, give birth, feed their children with milk, and have hair. All are completely aquatic organisms and have special adaptations such as flippers and tail flukes to live in the water.
Do whales have hair?
All mammals have hair at some point in their lives, and dolphins are no exception. Dolphins have several whiskers around the nose in the womb and lose them quickly when they are first born. .. The humpback whale's head ridge is a hair follicle, and some adult humpback whales still have hair.
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