What animals are in the sea, what are the animals in the sea

Animals in the sea include seahorses, sharks, jellyfish, tuna, crabs, squid, octopuses, turtles, oysters, whales, abalones, hairtails, whitefish, minnows, redfin fish, tenchfish, dolphins, and sea lions.

After decades of investigation and research by marine science and technology workers, 20,278 species of marine organisms have been recorded in the waters under the jurisdiction of China. These sea creatures belong to 5 kingdoms and 44 phyla. Among them, the animal kingdom has the largest number of species (12,794 species) and the prokaryotic kingdom has the least (229 species).

China's marine biological species account for about 10% of the total number of marine biological species in the world, and the number accounts for 50%.

Marine animals are a general term for heterotrophic organisms in the ocean. The ocean is an important life support system, and marine animals are an important part of the biological world.

There are more than 200,000 known species of marine animals, ranging from microscopic single-celled protozoa to higher mammals.

cetaceans, etc.; Marine animals can be divided into three large groups: marine invertebrates, marine protochordates, and marine vertebrates.

1. Sharks. 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, in ancient times, were called sharks and sharks.

The sand fish is a behemoth in the ocean, so it is known as the "wolf of the sea". The conventional wisdom is that sharks' cartilage (i.e., shark fins) is high in protein, but this is wrong.

Eggs have far more protein than shark fin. In addition, studies have shown that sharks are prone to mercury accumulation and shark fins contain a certain amount of neurotoxins, which are potentially harmful to humans. Sharks are at risk of extinction because of decades of mass hunting.

2. Whales. Whales are divided into two categories, one is baleen whales and the other is toothed whales. Whales belong to the phylum Chordates.

Subphylum Vertebrates, Mammalia, Euzoa.

It contains about 98 species of viviparous mammals that live in oceans and rivers.

There are more than 30 species in China's waters. All but a few species of whales live in freshwater, and all but a few inhabit the ocean. The definition of the whale itself is vague, and the whale can encompass all cetaceans, as well as specific families of cetaceans. All dolphins are also included in the whales.

3. Octopus Octopus: It is an octopus family.

A common name for 252 species of marine mollusks in 26 genera. It is the largest family of cephalopods, which can be divided into the subfamily of deep-sea myriapods, the subfamily of Aerdoudae, the subfamily of cephalopods and the subfamily of cephalopods. The body is ovate or oval, muscular, the mantle cavity has a narrow opening, and the body surface is generally without water holes.

Wrist suction cups 1 or 2 rows.

The third carpal stemmed on the left or right side of the male, with a seminal groove on the ventral margin of the wrist and a spoon-shaped lingual lobe at the end; The stemmed wrist cannot be self-broken. Funnel jacket lock degraded. 1 pair of vestigial needle-like inner shells or no inner shells. If there is a toothed tongue, the teeth on the side of the tooth tongue are usually single-cuspid. Stomach and cecum.

Located in the posterior part of the digestive glands.

Fourth, jellyfish. Jellyfish: are important plankton in the aquatic environment.

It belongs to the cninocysts.

Bowl jellyfish. 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.

5. Sea turtles. Sea turtles belong to the order Turtles, Turtles, and Turtles. It is widely distributed in the Atlantic Ocean.

Pacific and Indian Oceans.

Chinese sea turtles stretch from Shandong in the north to the Beibu Gulf in the south.

It is distributed offshore. 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. Feeds mainly on seaweed.

Encyclopedia — Sharks.

Encyclopedia – Whales.

Encyclopedia — octopus.

Encyclopedia — Jellyfish.

Encyclopedia — Sea turtles.

In the sea, the number of animals concerned. There should be thousands of kinds, and there should be no way to list them all here, you can search for them on the Internet.

Animals in the sea are seahorses, sharks, jellyfish, tuna, crabs, etcSquid, octopus, turtles, oysters, whales, abalone, hairtail, whitefish, minnows, redfin fish, tenchDolphins, sea lions, etc.

There are plants and cyanobacteria in the sea.

Red algae, brown algae, green algae, coral, kelp, sponge, spirulina.

Rotunda and so on. The animals and plants in the sea are also interdependent. After the death of an animal, the carcass decomposes to become the nutrition of plants, and many plants are the food of animals. It is the harmony of animals and plants in the sea that makes up the perfect ocean.

Marine life:Marine life refers to the species that are living in the ocean, including marine animals, marine plants, microorganisms and viruses. According to the distribution of marine organisms in China's waters, they can be roughly divided into two categories: marine organisms in waters and marine organisms in tidal flats.

Among the marine life in the water, fish, cephalopods (such as the cuttlefish, also called cuttlefish) and shrimp and crabs are the most important marine organisms. Among them, fish have the largest variety and quantity, and constitute the main body of marine life in the waters.

Sea lions, sharks, turtles, crabs.

There are whales, sharks, crabs in the sea.