Highly intelligent whales and dolphins abandoned the sea and committed suicide by landing collectively. Marine biologists have always been puzzled by this phenomenon.
In Australia, some people think that this is the whale trying to find shelter in the rocky bay to avoid sharks; some people say that the noise when the ship launches makes them lose their way.
American cetacean expert Professor A. Geode believes that sperm whale is a very sentimental animal. When a sperm whale is in distress on the beach, as long as it sends out a cry for help through a directional sound system, other members of the same species will rush to save it. If there is no escape, others of the same kind will not abandon them and leave. It is this long-term group lifestyle that has created their nature to protect their own kind, and ultimately led to their collective suicide.
Dr. Casey Buick and others from the California Institute of Technology in the United States discovered through research that sperm whales identify the direction of travel through the magnetic sensory organ . There are two situations in the distribution of the earth's magnetic field in the sea: The first is a gradually strengthening magnetic area, which becomes an extremely strong magnetic field area when it reaches the seabed mountains and other places ; The second is a weakening magnetic field on the periphery of the enhanced magnetic field area. area, and its adjacent end is an extremely weak magnetic area.
Sperm whales must pass through extremely weak areas before they can swim to areas with extremely strong magnetic fields. Although the magnetism here is extremely weak and will cause the sixth sense of sperm whales to fail, based on experience, in most cases, they will instinctively continue to move forward to reach areas with extremely strong magnetic fields to pursue prey. But who knows that some coasts are also areas with extremely weak local magnetic fields, so when the magnetic sense fails, sperm whales still instinctively rush to the coast in an attempt to swim to areas with extremely strong magnetic fields. This futile and fatal collision resulted in the tragedy of mass suicide.
Dr. Brian Gorman of the U.S. National Marine Fisheries Department carefully examined the carcasses of the sperm whales and found that their skin and mouths had severe ulcers, especially the skin that was separated from the body. After the body was dissected, red fluid was found in the chest, abdomen, heart and lungs.
The results of bacterial culture showed that these whales were infected with Vibrio or other pathogens, and their immune functions were already quite fragile. It was this infectious disease that claimed their lives. Therefore, Gorman believes that the collective suicide of sperm whales is the result of human beings' serious pollution of the ocean, which has caused the rapid reproduction of germs.
