How do turtles find their way? What is the difference between the appearance of a turtle and a turtl

<> Sea Turtles Two new studies reveal how animals use their own intrinsic nature"Compass.

to identify the direction. Researchers have found that migrating sea turtles rely on regional magnetic fields to guide them through the North Atlantic. Sea turtles avoid entering dangerously cold waters by orienting themselves along a circulating flow system known as the North Atlantic Gyre, the authors say.

From Florida, USA.

The eastern sea turtle pups begin their long migration as soon as they enter the sea. They swim towards the North Atlantic gyre that surrounds the sargassum sea area and spend several years swimming along this circulation.

Scientists studied how the turtle cubs reacted to different magnetic fields by placing them in a large tank surrounded by computer-controlled coils.

Each turtle is equipped with an electronic tracker that records the turtle's location. Sea turtles can respond to certain changes in the magnetic field by changing the direction in which they swim. In another item on the Zambian underground mole.

study of the Czech Republic.

And German researchers found a brain structure called the epithalamus.

Some nerve cells.

It's this animal creature"Compass. "part. These groups of cells respond selectively to different magnetic field directions. Moles use this magnetosensory information to synthesize a mental topographic map of their surroundings, while other animals use different sensory information to achieve the same topographic map.

The question of how exactly a sea turtle can find its place without getting lost is a question that has always been of great interest. Unfortunately, this remains a mystery to this day. It is believed that sea turtles have their own "compass" that can discern direction according to the position and altitude of the sun during the day and navigate by the stars in the sky at night.

It is also believed that sea turtles have a strong memory for the smell of seawater that they are exposed to for the first time when they are born, and they rely on their keen sense of smell to find their homeland.

In addition to being born and breeding on land, sea turtles live most of the time in the sea, where they can breathe with their lungs and draw oxygen directly from seawater using some special organs of their body. Its limbs are thick and paddle-like, making it suitable for paddling. The turtle looks clumsy on land, but when it comes to the sea it moves freely, and it has fully adapted to the marine environment.

Sea turtles are large and active, and they naturally eat a lot of fish, eggs, shrimp, and crustaceans every day.

and molluscs as well as algae.

Turtles have no teeth, but their beaks are so sharp that they can bite through mollusks with ease.

of the shell. From the perspective of the living habits of sea turtles, their high content, slow movement and physiological functions of hunger and cold tolerance are the reasons for their longevity.

Living environments are different: sea turtles live in the sea, while turtles are generally found on land or in fresh water.

Turtles have different limbs that resemble the fins of fish, which makes them better swimmers, but this also has the limitation of not being able to retract their limbs and head into their shells. And the turtle can do this, which allows the turtle to defend itself if it encounters enemies.

It is one of the common turtles and turtles, it is an ancient reptile that exists, almost all parts of our country are distributed, often inhabit rivers, lakes and marshes or ponds, eat worms, snails, shrimps and small fish and other animals, and also eat plant stems and leaves and grain.

Also known as the green sea turtle, it belongs to the turtle family sea turtle, and is the only species that lives in the ocean among all turtle and turtle animals. Sea turtles are widely distributed in the world's seas except the Arctic Ocean, with shells on their backs, and their patterns are more complex than those of ordinary tortoises or river turtles, and the appearance of the shell is flat and streamlined, and the limbs are fin-shaped, which is conducive to swimming. Sea turtles are migratory and generally only come ashore during the breeding season, and females lay their eggs in burrows dug in the sand.

The turtle's shells are drop-shaped, with broad shoulders that get narrower and narrower downwards, and the limbs have completely changed to flippers to facilitate swimming, and their nails have degenerated. It's difficult to crawl on land, and it's basically a matter of picking up and moving. And turtles, whether they are pure water turtles, semi-land, or pure land, have crocodile-like limbs and claws, but pure water turtles have webbing between their fingers.

When crawling, the limbs are propped up on the ground, and the abdominal armor can lift off the ground.

Sea turtles are a general term for turtles and turtles. It is widely distributed in the Atlantic, Pacific and Indian oceans. The Chinese sea turtle belongs to Japan, and it is distributed from Shandong in the north to the coastal waters of the Beibu Gulf in the south.

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. It lives in the Atlantic, Pacific, and Indian oceans, and goes to land to lay eggs and hatch larvae.

It is a national second-class protected animal.

Turtle refers to the general term of the turtle and turtle order in a broad sense, and refers to the species under the turtle family in a narrow sense. Turtles (chinemys reevesii) are also known as golden turtles, grass turtles, mud turtles, and mountain turtles. In terms of animal taxonomy, it belongs to the class of reptiles, turtles and turtles, and is one of the common turtles and turtles.

It is an ancient reptile that exists. It is characterized by a very strong carapace that allows the turtle to retract its head, tail and limbs into the shell when attacked (except for turtles and snapping turtles). Most turtles are carnivorous and feed on worms, snails, shrimp and small fish, as well as the stems and leaves of plants.

Turtles are found almost everywhere in China, but the production is higher in the middle and lower reaches of the Yangtze River. Guangxi, Shandong is also produced in various places, especially in the southeast of Guangxi, south of Guizhou and other places. It is mainly distributed in Japan, Brazil and North Korea.

In general, turtles have teardrop-shaped shells, with shoulders that are narrower and narrower, and their limbs have completely changed to flippers for swimming, and their nails have deteriorated. It's difficult to crawl on land, and it's basically a matter of picking up and moving.

Turtles, whether pure water turtles, semi-land, or pure land, have crocodile-like limbs and claws, but pure water turtles have webbing between their fingers. When crawling, the limbs are propped up on the ground, and the abdominal armor can lift off the ground.

Easily recognizable, the turtle is huge, and its two front legs have fully evolved into fins that allow them to swim in the water.

What you want to ask is the difference between a terrabahn and a tortoise.

The terrapin's claws remain clawed, but there are webbing between the fingers.

Tortoises have no webbed claws.

The only species of the turtle family, the pig-nosed turtle, has a special forelimbs similar to that of a sea turtle, but it is a freshwater turtle, not a sea turtle.

I'll show you the last picture, if the claws are like a turtle, it's a turtle a lot, but it's better to look at the picture to make sure it's more accurate.

One is a freshwater turtle and one is a saltwater turtle.