Information on the flora and fauna of the underwater world, and an introduction to the animals of th

1. Sharks, who live in the ocean, are fish in the ocean. Sharks have been on Earth since 300 million years before the appearance of dinosaurs, and they have been around for more than 500 million years, and they have barely changed in nearly 100 million years. Sharks, known as sharks, sharks, and sand fish in ancient times, are behemoths in the ocean, so they are called "wolves in the sea".

2. Sea turtles, belonging to the order of turtles, turtles, and turtles. It is widely distributed in the Atlantic, Pacific and Indian oceans. Chinese sea turtles are found in the coastal waters of the Beibu Gulf from Shandong in the north to the south of the Beibu Gulf.

It can be more than 1 meter long and has a lifespan of about 150 years. There is a pair of forehead scales on the top of the head. The limbs are like oars, the forelimbs are longer than the hind limbs, and each has a claw on the inside.

The head, neck, and limbs cannot be retracted into the nail.

3. Jellyfish is an important plankton in the aquatic environment and belongs to the class of spinophila bowl. Jellyfish are a very beautiful aquatic animal. Its body is shaped like a transparent umbrella, and the diameter of the umbrella body can be large and small, and the diameter of the umbrella body of the large jellyfish can reach 2 meters.

The edge of the umbrella has a number of whisker-like tentacles, some of which can be up to 20-30 meters long.

Marine plants, autotrophic organisms in the ocean that use chlorophyll for photo-based synthesis to produce organic matter. From the lower nucleated algae to the higher seed plants, there are a wide range of phyla, a total of 13 phyla, more than 10,000 species. Among them, Diatoms are the most, with 6,000 species; Protochlorophyta is the least, with only 1 species.

Marine plants are mainly algae, which are simple phototrophic organisms, and their morphological structure, life style and evolution process are complex, which are between photosynthetic bacteria and vascular plants, and occupy a very important position in the origin and evolution of organisms. There are not many species of marine seed plants, only 130 species are known, all of which belong to angiosperms;

Marine animals, a general term for heterotrophic organisms in the ocean, have a wide variety of phyla, and the morphological structure and physiological characteristics of each phyla can be very different. It feeds on plants, microorganisms and other animals and their detritus. Marine animals can be divided into three categories: marine invertebrates, marine protochordates and marine vertebrates

Marine invertebrates, accounting for the vast majority of marine animals, are the most diverse; marine protochordates, marine animals that are intermediate between vertebrates and invertebrates; Marine vertebrates, including fish, reptiles, birds, and mammals that depend on the ocean.

The text of "The Underwater World" introduces the underwater world from two aspects: the strange color of the scenery belt and the abundant products.

Nanjing Underwater World is located next to Meihua Mountain of Zhongshan Mausoleum in Xuanwu District, Nanjing, and is a large-scale marine life display project integrating popular science education, viewing and entertainment.

There are more than 200 species, more than 10,000 marine fish, 6 emperor penguins from Antarctica, more than 20 temperate penguins, and more than 30 marine mammals such as polar bears, arctic foxes, dolphins and sea lions. Nanjing Underwater World has a tunnel composed of 180-degree acrylic transparent glass, 74 meters long, 3 meters wide, high meters, and has a water storage capacity of more than 4,000 tons, in which more than 100 species of marine fish live.