What is the strongest predator in the ocean? In 1997, a very terrible thing happened in the Faralon Islands in the United States, a great white shark was attacked by a mysterious creature, the great white shark was unloaded into eight pieces, the great white shark is regarded as the ultimate killer of the ocean, the ferocious predator that rules the marine food chain, what creature can easily kill him in the sea, and what is the motive of this mysterious creature? In order to find out the truth, a team of experts from different fields of research has investigated the incident, and the final truth of the incident has re-upended human cognition of the ocean
To share with you the true stories that are more wonderful than the movies, hello I am Yin Hao, Peter Perry is a biologist, since 1987 he and his companions have been in the Fara Islands to observe the feeding of great white sharks, they have constructed a detailed description of the great white shark after nearly a decade of observation, and their observations have greatly improved human cognition of island sharks, but their views have changed because of an extraordinary event
Peter Perry
At 12:15 p.m. on October 4, 1997, Peter Perry and his companions, stationed in the southeast of the Fara Islands, saw a strange scene, a large group of seagulls circling in the air, a layer of oil floating on the sea and a fragmented great white shark, this rare scene attracted the attention of Peter Perry and others, why did the former sea overlord Great White Shark end up like this, what happened to him, was it less frivolous, or for love, once the emperor of the ocean, why now only the skin bag, Let's go back three hours to take a look at the bizarre experience of the great white shark
Mary Silk
At 9:20 a.m. on the day of the incident, biologist Mary True Yulan came to San Francisco to participate in the "Super Fish" one-day whale watching activity, at 9:20 a.m. the "Super Fish" set off on time, sailed to the farther sea through the Golden Gate Bridge, after the ship sailed for half an hour, the captain of the Super Fish received a radio call from the fishing fleet, the other party informed him that there were rare killer whales appearing 5 nautical miles southeast of the "Super Fish", hurry up to see, because there are few killer whales in the Farah closer islands, so the "Super Fish" If you can take tourists to see rare killer whales, it will surely receive countless praises, so the captain of the Super Fish immediately slammed on the accelerator and sailed towards the destination after receiving the news
Jay is full
The captain of the fishing fleet who was radioing at the time was named Jay Yokoman, and according to him, everything that happened after he made the radio call was that suddenly two killer whales suddenly swam over the bow of his ship, jumped out of the water, and headed straight for the California sea lion. The white colt crossed the gap for a moment "lion blood" and then the sea red, the seabirds gathered in groups circling above, Jie Hengman could not help but sigh in the face of this scene, life is so fragile, life is not it, in the face of the rapid change of the times Ordinary people are like floating duckweed, even their own fate can not be grasped, not to mention love
"Super Fish"
And just when Jay was full of sorrow, the "Super Fish" came to him with passion, the tourists on the ship were excited after seeing the killer whale, and they took out their cameras to record a rare scene, the two killer whales swam like huge dolphins in the sea, swimming very friendly For 20 minutes, at this time Mary True Yulan suddenly found that there was a large shadow under the "Super Fish", and this large piece was the great white shark, at the beginning of the period, the great white shark swam with the boat, but suddenly he turned 45 degrees, Leaving the viewing boat to swim like a killer whale, at the same time a killer whale also swam towards the shark, and then the two ocean bosses disappeared on the surface of the water at the same time, no fight, no blood, some just splashes and human screams, in a flash, the killer whale surfaced at the same time he still had the great white shark in his mouth
Killer whales that bite great white sharks
Whale-watching people were shocked by the scene in front of them, everyone was amazed, no one had ever seen this scene, the great white shark vs killer whale, which can make biologists sit in front of the campfire, the answer was revealed on this day, and the strength of the two seemed to be completely out of a grade, in just a few seconds, the killer whale KO great white shark, the TV station quickly reported on this event, but behind this strange duel there are many mysteries that have not yet been solved
The barren Faralon Islands are located on the shores of San Francisco, where the great white sharks gather, and whenever the flocks of great white sharks gather here in the fall, they are the largest in the world, they hunt for sea lions and seals that inhabit here, but after the killer whales attacked the great white sharks, all the great white sharks in the Faralong Islands have strangely disappeared, how did they disappear, and where did they go? Whether their disappearance was related to the whale shark duel, what was the motivation of the killer whale to attack the great white shark, why the same kind of incident had never happened before, and how the killer whale defeated the great white shark in just a few seconds, in order to understand the above mysteries, a team of experts from different fields of research gathered to investigate the incident
Farallon Islands
Since the number of killer whales at the time of the incident was two, and one of them was slightly smaller, many people at first thought that the killer whale attacked the great white shark to protect its children from harm, but this inference was quickly overturned, and the person on the screen was Alyssa Schuman Jennifer, who had been studying killer whales for 13 years, and he immediately recognized the killer whale after seeing the footage of the killer whale attacking the great white shark
Alyssa Schuman Jennifer
Alyssa Schuman Jennifer mainly studies the identification and tracking of animals in the watershed, he records, takes photos, etc., to find the fins and physical features of killer whales, and to distinguish them, to number these whales, in his recorded killer whales there is a small group called the Los Angeles group, which is a group of killer whales that occasionally appear on the shore of Los Angeles. There were 8 core members of the group, one of whom was numbered CA2 and the killer whale that attacked the great white shark at that time had the same physical characteristics, their fins and unique eye markings with birthmarks were exactly the same, and according to Alyssa Schuman Jennifer's research, CA2 did not have children at all, so the inference that killer whales chose to attack great white sharks in order to protect their children was a completely beautiful misunderstanding
Killer Whale CA2
The investigation team deduced from the animal habits of killer whales that the reason why killer whales attacked great white sharks was entirely because they were hungry, and a sea lion could not fill the stomach of killer whales, and it happened that a great white shark swam by at this time, so killer whales chose to use them to fill their hunger
And since killer whales prey on great white sharks, why have such incidents never occurred before? This starts with the biological habits of killer whales, which are the largest species in the dolphin family and are also a highly socialized animal, although killer whales exist in every ocean in the world, but killer whales in different regions have different food cultures and predation strategies, and there are killer whales with three different social cultures on the Pacific coast of North America
The first is the settled killer whale, who lives here for a long time, moves in groups, likes to make sounds, and feeds by eating fish, the second is the temporary killer whale, the temporary killer whale has a relatively large range of activities, they will form small groups, and their food culture is specialized in eating mammals, such as sea lion seals, and the killer whale group that attacks the great white shark belongs to the third type of tourist killer whale, which usually does not live here, but occasionally may come to travel, they have a food culture that is different from the first two types of killer whales, according to the study, Most of the killer whales that attack the great white shark live in warm seas, and the food in the warm seas is scarcer than in the cold waters of the north, so in such an environment, the predation of killer whales begins to become speculative and unfocused, and their food culture is to implement the spirit of fraternity
In addition, killer whales will use different attack methods when facing different prey, such as killer whales on the coast of Argentina will use the waves to rush ashore to catch small sea lions, in Antarctic killer whales will create waves to wash down the sea lions on the ice floes, in New Zealand killer whales will carefully pull the stingrays out from under the rocks, or use bubble blowing to scare out the stingrays hidden in the rocks, these predatory strategies of killer whales are not born or can be counted, but rely on teaching and generations. Each strategy takes years to summarize, so killer whales of different cultures have different predation strategies and food cultures, just like humans living in different regions have different civilizations, so it is rare for humans to see killer whales preying on great white sharks, precisely because the Yan'an killer whales living in the North American Pacific Ocean do not have the food culture of eating great white sharks, and they also do not have the technology and strategy of hunting great white sharks
Killer whales that go ashore to catch sea lions
Great white sharks have about 3,000 teeth with an average body length of four to six meters, an average weight of two tons of personality is very fierce and brutal, as a large offensive shark, great white sharks usually eat who they want in the sea, killer whales face such a powerful great white shark, how to subdue it in just a few seconds, this also starts from the shark's biological weakness
Dr. Sam Gubo
The picture is Dr. Sam Gubo, who has been studying sharks since 1978, and is currently the chief scientist of the Bileni Shark Laboratory, and now they are hunting down an adult female lemon shark, they are flexibly driving the boat to narrow the shark's range, and then seize the opportunity to catch the shark, the shark frantically resists, but when people turn the shark over, a magical scene appears, the shark immediately loses its ability to resist, the body is full of calm, and the way to learn the shark is so simple Just turn him over and scientists will make this a forced ban
Sharks that are forcibly banned
Sharks' brains secrete a chemical to avoid panic. When the shark is turned over, it will want to correct its upside-down visual world, but it is blocked by external forces, so its brain will secrete a large amount of neurotransmitter serotonin, and when the serotonin concentration increases, the shark will enter this "sleep" state, delirium, and lose consciousness. Sharks in this position will be defenseless. Sharks become silly fish, and great white sharks are warm sharks, need to move the body to help the heart deliver blood, but when the great white shark enters a state of forced prohibition, because no water flows through the gills, so they can not exchange carbon dioxide and oxygen, the oxygen pressure in the blood will be reduced, resulting in a phenomenon similar to suffocation
And killer whales have a strong ability to learn, if they have seen sharks in this situation or have had killer whales subdued sharks like this, then they will immediately master this method and even give an example, creating a more effective move, so investigators deduced that the killer whale eating shark incident in the archipelago is due to the fact that the killer whale preyed on sea lions at that time, the taste of sea lions attracted great white sharks, killer whales found great white sharks, so killer whales decided to use, IQ crushed great white sharks, The killer whale unexpectedly unleashed a super impact on the shark, knocking the great white shark straight over, making it into a forced standstill, then dragging it out of the water to wait for it to suffocate, and then putting it in Misimisi
About 100 sharks have been reported in the Faralon Islands every autumn since the beginning of September, very punctual, the number of sharks on the shore began to increase steadily in early September, and began to decline after reaching the peak peak in early November, the Farrock Islands are the main habitat of seals and sea lions, great white sharks can maintain energy for 3 to 4 months by eating a seal, so sharks can get a year's energy in the Fara islands within 2 months. But after the killer whale attacked the great white shark, everything changed, and the number of sharks fell to zero, what made the great white shark prefer to miss the entire feeding season and choose to leave here, at first no one knew the answer
Until three years later, on November 19, 2000, another group of killer whales came to the Fara Islands to travel, and also preyed on the great white shark, and then the great white shark fled here again, but this time in the fleeing shark, there was a satellite mark on the body of the shark, according to the information transmitted, after the incident, the shark immediately dived 500 meters, and then swam from this depth to Hawaii. What experts can't understand is what kind of signal can make hundreds of great white sharks give up foraging and flee at the same time
Information from sharks
If you want to find out what is the great white shark that scares the islands, then you must first know what kind of perception detected the danger of the great white shark on the day of the incident, this is just the black kiss real shark on the screen, he belongs to the distant relatives of the great white shark, the perception is almost the same as the great white shark, the black kiss real shark can be perceived through visual hearing and smell, vision is the most misunderstood perception of the great white shark, in fact, the great white shark has good vision, in the day his observation radius can reach 50 meters, the ears of the great white shark are very hidden, that is, two small holes in the top of the head, The ears can help the great white shark receive sound waves in the sea, the nose is located on both sides of the head, it can receive different odors, these three perceptions can detect the presence of killer whales,
Black kiss true shark
But according to the expert's research inference, it is not the killer whale that triggers the shark's escape, but the smell of the corpse of the same kind of great white shark, the shark's carcass will release a lot of this chemical signal to drive away other sharks when decomposing and decomposing, experts will reproduce this smell by extracting the key chemicals of the dead shark tissue, and through the test, it is found that when the sharks perceive this smell, they will quickly escape, so it can be speculated that the shark's great escape at that time may be due to the release of this chemical signal by the dead shark carcass. But what experts have not yet seen in high definition is that the area of the archipelago is about 100 square miles, can this signal of sharks spread such a wide range?
Sharks scared away
The Fara Islands incident has helped human beings to have a deeper understanding of the relationship between the two top predators of the ocean, but it has also left a mystery that has not been solved so far, and everyone is welcome to publish their views on this incident in the form of a message