My Animal Friends: Arctic Animals. River Animals

Author: Tian Zhansheng
Publisher:
Publish Date: 2006-01-01
Features: Polar Animals: The Earth's south and north poles are known as the "Antarctic" and "Arctic" polar regions. These are the coldest places on Earth, where temperatures rarely rise above freezing, making the land and sea perpetually frigid and covered in ice and snow. In summer, the sun never sets; in winter, the sun does not rise, leaving it dark from morning to night. The harsh natural environment makes the polar regions uninhabited, but some adorable creatures still survive there with resilience, such as whales roaming the Antarctic waters, emperor penguins breeding in Antarctica, and polar bears, seals, and more. To adapt to the ice and snow environment, some have thick fur or down, while others rely on the fat in their bodies for warmth. Most polar animals are white, which helps them blend into the snowy landscape. In human eyes, the poles are seen as lifeless, unconquerable regions, but they are ideal habitats for some animals. Perhaps it is precisely because humans do not intrude here that animals living in the poles can enjoy such a peaceful and joyful life.
River Animals: Rivers nurture a vibrant world of plants and animals: the water surface is covered with tiny floating plants, floating with abundant aquatic vegetation, and reeds and rows of trees grow along the banks. These generous gifts of nature attract countless species of animals. Overall, the composition and distribution of river animals depend on the section, width, flow rate, depth, and substrate of the water body. The upper reaches of rivers have characteristics such as fast water flow, relatively stable temperatures, and high oxygen content in the water. To obtain rich oxygen and a relatively stable temperature for hatching, many fish species choose to breed here. The lower reaches of rivers have slower water flow, lower oxygen content, and a substrate of rich organic mud and sand, so the species in this section are much more abundant than those in the upper reaches. The arrival of animals brings vitality to the rivers, and the rivers themselves are also a colorful world, providing a vibrant paradise for the animals that live there. Let us enter this beautiful and mutually beneficial world together!