CATDOLL : CATDOLL: Where is Dandong's seafood caught?

Where is the seafood in Dandong caught?

According to the time and type of seafood on the market:

1. It is from Zhuanghe, Shandong Province that the first batch of shrimps, scallops and abalone were put on the market.

2. Donggang raises shrimps in the shrimp ponds by the sea. The species raised include Xiaorenxian Haizhe shrimp (artificially cultivated shrimps with guns as long as their heads), bighead carp, razor clams, etc.

3. Donggang shallow sea aquaculture of yellow clams, sand clams and white clams

4. Donggang's natural seafood includes crabs (some are farmed), fish, mud snails, squid, octopus, and shrimp (caught after artificial stocking, which is very different from artificial breeding in that the shrimp claws are much longer than those in farmed areas)

5. North Korea and Donggang bartered goods. The goods on the former Yangda platform were mainly shellfish, crabs, shrimps and prawns.

6. After being caught from the Sea of ​​Japan in South Korea, Zhejiang, Shandong, etc., they are sent back by transport ships. They are mainly fish, squid, etc.

Whose nickname is "Ba Dai"? Where does its extraordinary wisdom manifest itself?

Octopus, nicknamed "eight-banded" by fishermen.

Octopuses have a thinking ability that exceeds that of ordinary animals

On the planet we live in, there are more than 1 million species of animals. Like humans, they follow the "natural law" of "survival of the fittest". Some animals dress themselves up to look like objects in the external environment in order to escape from enemies and protect their own survival and the reproduction of species. Octopuses are masters in this regard. In order to avoid being hunted by "predators", octopuses not only use the well-known mimicry and camouflage techniques and the "wrist" self-preservation techniques, but recently, American scientists have discovered "highly intelligent" octopuses that can "walk" on two feet to escape in the Indian Ocean. The discovery was published in the latest issue of the authoritative academic journal "Science". In addition, octopuses can also mimic sea snakes, lionfish, corals, and walk on two feet. Mimicry refers to a method by which animals change their "dress" according to the surrounding environment to escape from natural enemies or capture prey. In nature, animals have a variety of mimicry skills. There is a very strange bird in the jungle of Africa. Its mimicry skills are amazing. When it lands on a branch, it spreads its wings and looks like five beautiful petals. Its head is like a bright stamen. This clever camouflage can not only deceive the attack of giant eagles, but also easily capture stupid insects that are deceived and come to "collect honey". But compared with the "master of disguise" octopus, the mimicry of this bird seems to be slightly inferior. Octopus can not only spray ink six times in a row, but also change its color and structure like the most flexible chameleon, becoming like a stone covered with algae, and then suddenly pounce on its prey, and the prey has no time to realize what is happening. Octopus can use its flexible arms and legs to crawl between reefs, cracks and seabeds, sometimes disguising itself as a bunch of corals, and sometimes dressing itself up as a pile of shining gravel. Mark Norman of the University of Melbourne, Australia, discovered in 1998 in the estuary waters near Sulawesi Island, Indonesia, that an octopus can quickly mimic poisonous creatures such as sea snakes, lionfish and jellyfish to avoid being attacked. Scientists were surprised to find that among marine creatures, octopuses can actually move in the sea by walking. Christine Heffald of the University of California, Berkeley, and her research team published a paper in the recent journal Science, pointing out that in the video recording the movement of octopuses in the Indian Ocean, they accidentally found that some octopuses actually walked on the seabed with two feet. An octopus named Maginetus was filmed in the tropical waters of Indonesia. It is about the size of an apple. When facing danger or encountering divers, this octopus will bend and fold six of its eight "claws" upwards to make the appearance of a coconut shell, and the remaining two "claws" will stand on the seabed and move backwards secretly, like a small coconut that can move, and escape by walking backwards, with a very funny posture. Another walnut-sized octopus, Aiculites, also walks on two legs, but the other six legs are stretched out to simulate the appearance of seaweed. When the research team analyzed why they chose to walk on two legs and why they imitated the land plant coconut, they found that the speed of walking with two arms and legs was much faster than using eight arms and legs. The former has a maximum speed of about 0.14 meters per second. In an interview with Nature magazine, Heffald pointed out that the imitation of the Marginatus octopus into a coconut may be related to the abundant coconuts falling on the seabed nearby. Octopuses have three hearts, two memory systems, and 500 million neurons in their brains. At first, Heffald was shocked when he observed the octopus's "bipedal walking" because so far, they have not found any sea creatures that walk on "two feet". Moreover, in the animal kingdom, scientific theory believes that there are only two structures that can facilitate the phenomenon of "bipedal" movement. One is a species with hard bones and freely retractable skeletal muscles, and the other is a species with joints to coordinate their limb movements to enable it to walk. Obviously, the octopus's arms and legs have no joints, no bones or skeletal muscles, but it has achieved this. Biologists believe that the octopus's arms and legs move in a very unique way, and its camouflage "skills" do require a little "brain". But there are only a few nerves in the octopus' arms and legs that go to the brain. How can it stretch freely and pose in many unexpected postures, such as coconuts and seaweed? Jim Cosgrove, an expert who has been engaged in octopus research for many years, pointed out that the octopus has "conceptual thinking" and can solve complex problems on its own. It is this ability that enables it to walk on two feet. Jim Cosgrove wrote in the French "Figaro Magazine" that the octopus is one of the creatures that has ever appeared on the earth that is most different from humans. The octopus has well-developed eyes, which is its only similarity with humans. It is very different from humans in other aspects: the octopus has three hearts, two memory systems (one is the brain memory system, and the other memory system is directly connected to the suction cup), 500 million neurons in the octopus brain, and some very sensitive chemical and tactile receptors on the body. This unique neural structure gives it a thinking ability that exceeds that of ordinary animals. Scientists have found that octopuses can solve complex problems on their own and have the so-called "conceptual intelligence". Scientists have conducted a test on octopuses: scientists put a glass bottle containing lobsters in the water, but the bottle mouth was blocked by a cork. After circling the bottle several times, the octopus used its tentacles to entangle it, and then used its tentacles to poke the cork at various angles and finally successfully pulled it out, so that it could have a full meal. The study believes that this experiment shows that the octopus can solve complex problems on its own, that is, it has the so-called "conceptual intelligence". After further research, scientists also found that octopuses live alone since birth. It takes only a very short time for a young octopus to learn the skills it should have, and unlike most animals, the learning of young octopuses is not based on the teaching of their elders. Although their parents have inherited some abilities from them, the young octopuses develop their own ability to solve new problems by learning to hunt, camouflage, and find better shelter. The overly "intelligent" octopuses have also caused scientists to worry.

"This discovery has greatly enriched our understanding of octopus behavior, and it is also very inspiring, because it proves that octopuses may have other ways of walking, or that there are other animals on the seafloor that can walk on two feet," said Heffard. In addition, understanding how octopuses control and coordinate their other eight soft arms and legs will help engineers design more flexible robotic arms or robots that do not require a brain. Millions of years have passed, and the octopus family has become smarter and smarter. Some octopuses can secrete a super-strong toxin that is enough to kill people, and some octopuses (such as deep-sea octopuses) have turned their suckers into luminous organs to attract prey... Jules Verne dreamed of it: a huge octopus called Octopus ruled the waters along the North Pacific coast from California to Japan. In the American blockbuster "The Matrix", there is a shot that everyone may remember. When the soldiers of Zion City returned to the spacecraft, they were attacked by a group of intelligent octopuses. Their "arms" were both fierce and accurate, and their lethality was extremely strong. Perhaps Hollywood screenwriters have also seen the special potential of the octopus, which is why some people predict that the lurking octopus is waiting for its own reign to come.