Nature is amazing. It has created many species, and some animals are famous for their size. When it comes to the largest animal in the world, everyone will think of whales. The whale family is very large, with more than 90 species.
Scientists divide them into two categories, one is baleen whale and the other is toothed whale. Blue whales and humpback whales are baleen whales, and killer whales, narwhals, and dolphins are all toothed whales.
Whales do not have fish gills and cannot directly use the oxygen in the water, and need to surface regularly to breathe.
When hunting, whales have a secret weapon - "sonar", which uses ultrasonic waves to detect prey. To maintain their huge size, blue whales can swallow up to 4 tons of food in a day.
Their favorite food is krill, a small crustacean. To get enough calories, a blue whale eats 40 million krill a day.
As mammals, whales also need to rest, sleeping several times a day, and sleeping for more than ten minutes or half an hour each time is enough.
When it comes to size, most of the whales are the giants of the ocean. The blue whale is the largest known mammal, reaching a length of 34 meters, almost the size of a jet airliner.
Their excrement nourishes the plankton in the water, and with enough plankton, fish and krill have something to eat. When they are old and die, they sink into the deep sea, and they can nourish many creatures on the seabed for hundreds of years.
As the so-called "one whale falls, all things are born", the charm of whale fall is not only the quiet and poignant beauty of the process, but also that after their life ends, they still return to the ocean that nurtured them.
With the rapid development of science and technology, the number of hunted whales has also increased hundreds of thousands of times. In modern times, human hunting activities are almost crazy, and most whales are on the verge of extinction. Therefore, protecting whales has become an urgent task.
1. The judiciary should apply relevant laws and regulations to protect whales, so that criminals who hunt whales are subject to legal sanctions.
2. Strictly control the discharge of coastal living and industrial sewage, protect the marine living environment, and leave a quiet and harmonious living environment for whales.
3. Build a marine life protection hall, establish awareness of marine ecological protection, and strengthen the publicity and education of whale protection knowledge.
As ordinary people, we can also help protect whales and the ecological environment through some small things in our lives.
1. Do not go to the venues where cetaceans are illegally kept in captivity to watch the performance.
2. Jointly call for an end to wild capture and captive breeding of cetaceans.
Whales are gentle and intelligent marine animals. Under normal circumstances, they will not easily take the initiative to attack humans. They have to attack humans unless they are desperate and desperate.
Whether it's whales or other marine animals, each of us has a responsibility to protect them. Protect the ocean, protect every kind of ocean elves,and the world will be living.
