Marine animals include whales, dolphins, sharks, octopuses, seahorses, saltwater fish and other sea creatures. This tutorial will help you learn to draw whales, jellyfish, octopus and schools of fish.
Methods/Steps
First draw the outlines of the whale and octopus. You can also add the upper part of the jellyfish. Remember to draw the whale bigger than anything else!
Add details to the whale. Add his fin, his left eye and various line details. Draw the mouth with smooth lines.
Add details to the jellyfish. Don't forget its tentacles!
Draw the octopus' eyes and lines on its body. You can also add details to the top of the jellyfish. Add dots to your artwork by drawing a school of fish.
Erase your pencil drawing.
6. Add color!
How Marine Animals SleepMarine animal is a general term for heterotrophic organisms in the ocean, with a wide variety of phyla, each of which can vary greatly in morphology, structure and physiology. Tiny single-celled protozoa, large cetaceans can be more than 30 meters long and weigh more than 190 tons. The following is my carefully recommended marine animals are how to sleep, for reference only, welcome to read!
How do marine animals sleep
Both humans and animals need to sleep. If we don't get a good night's sleep for a long time because of outside interference, we and the animals will be physically and mentally exhausted, and even lead to death. People will generally lie down to sleep, while the animals sleep in a variety of strange - swamp herons, storks, cranes, sandpipers and other wading birds such as animals can be independent on one foot, wolves, dogs, jackals and other canines need to ear to the ground, bats are able to hang upside down the body, spiders, monkeys and other as long as the tail hooked on the branches of the tree on the then, the ocean animals and how to
What about the animals that sleep in the ocean?
While there is a wide variety of sleeping positions in the oceans, the vast majority of marine animals sleep for very short periods of time because of the dual pressures of respiration and predators, making it difficult for humans to detect them.
Fish sleep with their eyes open because they have no eyelids and can never close their eyes. To keep breathing, the gill covers still flap slowly and rhythmically, and occasionally the pectoral or caudal fins are paddled to keep the body balanced. Fish sleep like humans taking a nap, some for only a few minutes, some even for only a few seconds, mainly because they must always be alert or fall into the jaws of a sneak attacker.
Dolphins seem to be in the water all day, every minute of every day, so it's hard to tell when they're sleeping. In fact, they have a schedule similar to ours. At night, a dolphin will dive 30 meters underwater and go quietly to sleep, yet its tail will still wag every 30 seconds or so. But dolphins are mammals, how does it breathe when it sleeps? It turns out that the dolphin's lung capacity is very large, and oxygen can be stored in the blood, so after it breathes once, it can no longer surface in a few minutes, which is enough time for it to dream beautifully. Of course, dolphins stay alert while they sleep. Scientists have found that the two hemispheres of their brains sleep alternately: while one side is asleep, the other is awake. After a while, the two are switched again, and if there is a sharp stimulus from the outside world, both hemispheres will wake up at the same time, ensuring that they can react quickly to changes in the outside world.
Seals, unlike dolphins, can live both underwater and on shore. If they choose to sleep on shore, they are similar to land animals; if they choose to sleep underwater, they have to wake up every time they take a breath, which is uncomfortable for us onlookers, but they are used to it.
While the octopus sleeps, it leaves two tentacles scratching around its body while the rest are curled up to rest. If the two active tentacles are disturbed by the outside world, they immediately wake up.
The manatee likes to sleep at the bottom of the sea, but they are not like dolphins and whales that can hold their breath for a long time underwater, the manatee almost more than 10 minutes will have to surface to change their breath, so their "good dream" is difficult to be consistent.
The seals are much smarter, they either sleep on land, or sleep with their noses out of the ice holes to breathe, and their bodies floating vertically in the water, looking like upright sculptures, which makes it easier for them to breathe and does not delay sound sleep.
Marine animals have different ways of sleeping.
Why do some plants "walk"
A botanist was on a scientific expedition to a deserted place in the western United States, and when he left to find the place next time, he chose a special plant and marked it well. However, after a few months, when he returned there again he realized that the plant was gone! The careful scientist looked around carefully and noticed a shallow trail on the ground. Following this trail, he walked a long way and finally found the marked plant by a small lake. The plant was actually walking on its own?
It turns out that the plant is able to grow in one place when there is enough water, but when there is a drought and a lack of water, its roots leave the soil and the plant rolls up into a sphere. It will move with the wind when the wind picks up, and when it encounters a place with water, it will stop and insert its roots into the soil to get water and nutrients to start its new life. Because the plant seems to be able to sense its surroundings and awaken from its slumber, people call it the Awakening Tree.
There is another plant in the desert called the tumbleweed, which is also able to roll its roots into a ball in times of drought and roll with the wind, looking like a small ball rolling rapidly from a distance. When it encounters a place with water, it falls back to its roots and grows again.
Why there are no three-legged animals
In the "Classic of Mountains and Seas" (山海经-大荒东经) there is a record that says: "In the East China Sea, there is the Liubo Mountain, which is 7,000 miles into the sea. There is a beast on it, the shape of a cow, pale body and no horns, a foot, in and out of the water must be wind and rain, its light like the sun and moon, its sound like thunder, its name is Kui. The Yellow Emperor got it, with its skin as a drum, pegged to the bone of the thunder beast, the sound of 500 miles, to the world." This legendary ancient mythical beast was actually an animal with only one leg.
The leg is the organ of locomotion in animals. In reality, snails rely on one "leg" to crawl, frogs, lizards, leopards, elephants, etc. use four legs to jump, crawl and walk, humans, bats, birds and the extinct pterodactyls, etc. have two legs. However, rack your brain and you probably won't be able to list which group of animals have three legs, and the reason for this is likely to have something to do with the evolutionary journey of the organisms.
At the beginning of life, a cell was a life. After that, life began to appear on Earth that consisted of more than one cell, such as the most primitive and lowest multicellular animal, the sponge. Although some sponges had a certain shape and symmetry, most grew irregularly like plants, forming asymmetrical body structures such as flat, round, and dendritic. Then, jellyfish and other coelenterates began to appear, their bodies have a central axis (from the mouth surface to the anti-mouth surface) has a number of facets, can be divided into two equal parts of the body, biology has this form of organisms known as "radial symmetry organisms". They can only be divided into upper and lower parts, not front and back, and can only be fixed in the water or float with the current, and passively take food from the surrounding environment.
Later, in order to obtain the right to take the initiative, a class of animals suitable for both swimming and crawling appeared. To do this, their bodies had to be distinctly divided into front and back, right and left, dorsal and ventral. Morphologically, through the central axis of the animal body, there is only one plane of symmetry (or tangent) can be divided into two equal parts, this kind of animal is called "bilateral symmetry animal" or "left-right symmetry animal". This shift from undirected to directed motion allows for a wider range of adaptations and is a higher form of evolution than radial symmetry.
There are many animals that are symmetrical on both sides, such as mollusks like snails and snails, mammals like humans, leopards, and elephants, birds, amphibious reptiles like frogs and lizards, and insects like dragonflies and locusts. As the name suggests, they embody either 1 (which can be split in two) or an even number such as 2, 4, 6, etc. when it comes to the number of legs, otherwise there can be no symmetry in body shape. Thus, a three-legged animal could not exist in the ranks of two-sided symmetry.
So, is it possible to be found in radially symmetrical creatures? In an animal known as five-radial symmetry, there are indeed starfish with five wrists that can move slowly. By extension, you might suggest that there should also be "some kind of starfish" with three "legs", but unfortunately this has not been found so far. And fundamentally, such fixed or floating creatures that move passively have no real "leg" structure.
Perhaps, in the long history of life's evolution, there have been animals with three legs. Unfortunately, no such animals have been found, either living or in fossilized form. As for the occasional news reports of animals with three legs, it is due to the environment and genetic mutation of the formation of deformities, there is no way to stable inheritance to the next generation.
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What are all the animals in the seaThe animals in the sea are seahorses, sharks, jellyfish, tuna, crabs, squid, octopus, turtles, oysters, whales, abalone, banded fish, white striped fish, pressor minnow, red fin fish, ding hooks, dolphins, and sea lions. After decades of investigation and research by marine scientists and technicians, 20,278 species of marine organisms have been recorded in the waters under our jurisdiction. These marine organisms belong to five biological realms and 44 biological phyla. Among them, the animal kingdom has the most species (12,794 species) and the prokaryote kingdom has the least (229 species). Our marine species account for about 10% of the total number of marine organisms in the world and 50% of their number. Marine animals (marineanimals) is 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 community.