What animals swim in the water, animals that swim in the water

The animals that swim in the water are:1. Fish. 2. Amphibians.

Frogs, rain frogs, tree frogs, toads.

Axolotls, salamanders, and less well-known legless salamanders, nasal worms, and salamanders.

3. Reptiles: anacondas.

4. Mammals: whales, dolphins, platypus.

Otters, seals, sea lions, walruses, etc.

5. Invertebrates.

Octopus, squid, jellyfish, conch, jellyfish, starfish, crab, coral, shrimp, sea cucumber, etc.

Characteristics of animals that live in water are adapted for living in water:

The locomotor organ is the fins, and the respiratory organ is the gills. Most of the animals that live in the water are fish, and the fish are motivated by the left and right swings of their tails and torsos in the water, and their fins coordinate with each other to obtain food and defend against predators.

The respiratory organs of fish are gills, which absorb dissolved oxygen from the water to complete their respiration. Therefore, the two important characteristics that animals living in water should have are: being able to swim in water and being able to breathe in water.

Animals swimming in the water are: dolphins, platypus, otters, seals, sea lions, etc.

Summary. Fish: All fish swim in the water, they breathe dissolved oxygen in the water by gills and swim by fins.

Amphibians: such as baby fish, frogs, etc., many amphibians are very rare and are protected animals.

Aquatic arthropods: such as shrimp and crabs, aquatic insects, etc.

Aquatic reptiles: such as turtles, turtles, water snakes, sea snakes, etc. There are also some semi-aquatic reptiles, such as crocodiles, that can also swim in the water.

Aquatic mammals: such as whales, dolphins, seals, etc.

Aquatic molluscs: such as juvenile mussels, squid, octopus, etc.

What are the animals swimming in the water?

Fish: All fish swim in the water, they breathe dissolved oxygen in the water by gills and swim by fins. Amphibians:

For example, baby fish, frogs, etc., many amphibians are very rare and are protected animals. Aquatic arthropods: such as shrimp and crabs, aquatic insects, etc.

Aquatic reptiles: such as turtles, turtles, water snakes, sea snakes, etc. There are also some semi-aquatic reptiles, such as crocodiles, that can also swim in the water.

Aquatic mammals: such as whales, dolphins, seals, etc. Aquatic mollusks:

Such as juvenile mussels, squid, octopus, etc.

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There are many animals swimming in the water, such as sea dolphins, sea lions, carp, octopuses, jellyfish, whales, walruses, water snakes, seahorses, hail turtles and so on. The animals swimming in the water are divided into rivers and seas, which are different from the living environment, and can be classified according to the freshwater environment and the saltwater environment.

If it is a freshwater environment, there are grass carp, bream, herring, silver carp, bighead carp, spotted naked carp, Xinjiang heavy lip horn and cochineal, etc.

If it is a saltwater environment, there are dolphins, sharks, whales, seahorses, jellyfish, sea snakes, squid, clownfish, flounder, and sea lions, to name a few.

If it is an amphibian, there are frogs, crocodiles, giant salamanders, small salamanders, salamanders, baby or wild baby fish, tree frogs, etc., and amphibians are mainly frogs.

The animals that live in the water are:

1. Fish: Fish are ectothermic aquatic vertebrates that breathe by gills, swim through the swing of the tail and trunk and the coordination of fins, and feed by the upper and lower jaws, which belong to the vertebrate subphylum of the phylum Chordates, and generally divide vertebrates into five categories: fish, birds, reptiles, mammals, and amphibians.

2. Jellyfish: Jellyfish are important plankton in the aquatic environment, including the spiny filaments, the cruciferous jellyfish, and the cubic 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.

3. Starfish: Starfish is the most representative type of echinoderm with structural physiology. The body is flattened, mostly symmetrical with five radiations, and the demarcation between the body disc and the wrist is not obvious.

When living, the mouth faces down, and the mouth faces up. The ventral side of the wrist has a step groove, and the groove protrudes from the tube foot. The plates of the endoskeleton are connected by connective tissue and are flexible and flexible.

The body surface has spines and fork spines, which are protrusions of bones.

4. Turtle: The turtle is a reptile of the turtle family and the genus of hydrochloroids. The head is small, less than 1 4 as wide as the dorsal carapace, the anterior part of the top of the head is smooth, and the posterior part ** has fine-grained scales; The snout is obliquely cut medially, and the sheath of the beak margin is thinner; The angle between the left and right teeth of the lower jaw is less than 90°.

The dorsal carapace is flattened, with 3 longitudinal ridges, the limbs are slightly flattened, and the fingers and toes are webbed, and there are claws.

5. Squid: The squid's real name is cuttlefish, also known as flower branches, cuttlefish or cuttlefish. It is an animal of the order Cephalopoda of the mollusk phylum Cephalopod.

When a squid encounters a strong enemy, it will use "inkjet" as a method of escape and wait for an opportunity to leave, so it has "squid" and "cuttlefish" as a collapsing name. There are small pigment sacs in its **, which will change color and size with the change of "mood".

Needless to say, the earth is covered by more than 70% of water, and the sea is the main part of it. Even though it seems that humans today seem omnipotent, the truth is that in the vast waters of the earth, especially in the marine world, human beings have only discovered 5% of the seabed, and even the understanding of everything in the 5% is not fully understood.

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Hello, glad for your question All fish, amphibians, aquatic arthropods, reptiles, water mammals, and water molluscs are all creatures swimming in the water Such as baby fish, frogs, crabs, water insects, turtles, turtles, water snakes, sea snakes, crocodiles, whales, dolphins, seals, squid, octopuses, etc

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1. Fish. All fish swim in the water, they breathe dissolved oxygen in the water through their gills and swim with their fins. There are more than 20,000 species of fish, such as carp, crucian carp, sole, hairtail, shark, goldfish, etc.

2. Amphibians. Such as baby fish, frogs, salamanders, etc.

3. Aquatic arthropods. Such as shrimp and crabs, aquatic insects, etc.

4. Aquatic reptiles. Such as turtles, turtles, turtles, water snakes, sea snakes, etc. There are also some semi-aquatic reptiles, such as crocodiles, that can also swim in the water.

5. Zooplankton. Such as sea stingers (jellyfish) and so on.

6. Aquatic mammals. Such as whales, dolphins, sea lions, seals, etc.

7. Aquatic molluscs. Such as juvenile mussels, squid, octopus, etc.

Carp, turtles, soft-shelled turtles, frogs, loaches, yellow eels, Chinese sturgeons, pufferfish, white dolphins, sharks, jellyfish, water snakes, whales, krill, penguins, otters, platypus, ducks and many more.