发布时间：2020-09-13 19:17 浏览： 次
Penguins (order Sphenisciformes, family Spheniscidae) are a group of aquatic, flightless birds living almost exclusively in the southern hemisphere. Highly adapted for life in the water, penguins have countershaded dark and white plumage, and their wings have become flippers. Most penguins feed on krill, fish, squid, and other forms of sealife caught while swimming underwater. They spend about half of their life on land and half in the oceans.Although all penguin species are native to the southern hemisphere, they are not found only in cold climates, such as Antarctica. In fact, only a few species of penguin live so far south. Several species are found in the temperate zone, and one species, the Galápagos Penguin, lives near the equator.The largest living species is the Emperor Penguin (Aptenodytes forsteri): adults average about 1.1 m (3 ft 7 in) tall and weigh 35 kg (75 lb) or more. The smallest penguin species is the Little Blue Penguin (also known as the Fairy Penguin), which stands around 40 cm tall (16 in) and weighs 1 kg (2.2 lb). Among extant penguins, larger penguins inhabit colder regions, while smaller penguins are generally found in temperate or even tropical climates (see also Bergmann's Rule). Some prehistoric species attained enormous sizes, becoming as tall or as heavy as an adult human (see below for more). These were not restricted to antarctic regions; on the contrary, subantarctic regions harboured high diversity, and at least one giant penguin occurred in a region not quite 2,000 km south of the equator 35 mya, in a climate decidedly warmer than today.
The reason of liking penguin
Many of us are liking animals very much,some of us like dogs,others like cats,which can be easily seen in anywhere,well,i'm very keen on penguin.
the reason of mine to have keen on penguin is because their uniqueness,unlike with most of other animals,they only live in the South Pole,and unlike with most birds,though they can't fly,yet they can swim in the extreme cold glacier,and the most wonderful part is they can stand like a human and walking,it's very cute when they are walking,Most of the endangered animals are very harmful,yet the penguin looks harmonious as well as entertaining,we even will put them on the movies and cartoons such as "Madagascar" and "Ice Age" and so on.
I like penguin,and when i grow up,wish to do research on the south pole to observe penguin and protect them.