Chapter 703: The Fishing Net on the Little Gray Whale

Chapter 703: The Fishing Net on the Little Gray Whale

Many people have the perception that whales are experts in diving, they are giant beasts that can dive for hours at every turn and swim in the deep sea of ​​hundreds of meters or even thousands of meters, just like the legendary whale Vitan, everything in the ocean is invincible.

This is a misconception.

In terms of diving time, whales are inferior to most animals that are really good at diving, but because whales are mammals, they are far ahead of a large number of similar species that breathe with their lungs and will drown in water in a few minutes. Therefore, there are bonus items in biological characteristics, so it appears that the diving ability is much stronger.

The points that can be added can only be added points. Compared with the most common tortoise, the diving time that starts at two to three hours, only biliary whales and sperm whales can dive for 120 minutes and 90 minutes respectively, and this is the limit The state is generally about 50 minutes, so it is already the "diving champion" among whales.

The limit state can only touch the lower limit of many diving experts, which can be seen.

Of course, it is quite good in terms of hours, so when whalers hunt them, once they see them diving deep, they have to wait on the spot for a long time.

The second is the "diving runner-up" represented by right whales and baleen whales, who can dive for 60 minutes and 40 minutes respectively, but generally need to rest on the sea surface for 5 to 10 minutes every 10 to 15 minutes of diving.

Then there are other whales, the time is basically less than half an hour. Judging from the types of whales, these species account for the vast majority.

For example, a blue whale consumes 2-4 tons of food every day. Swimming speed is 2-6km/h when feeding, 5-33km during migration, and the maximum speed is 20-48km per hour.

Generally, 10 to 20 small dives are followed by a deep dive. The interval between shallow dives is 12 to 20 seconds, and the deep dive can last for 10 to 30 minutes.

Blue whales are the norm. Sperm whales that can dive for an hour and dive 2,000 meters deep are the big daddy of whales and the Bolt of humans.

This is also true. In the Middle Ages, humans were able to paddle boats to chase and kill whales. Otherwise, they would dive deep for an hour and swim far away. Who can catch it?

Those who can go on board to catch sperm whales are the best of the best, and they are medals of adventure and honor.

Of course, there are dolphins at the end. The diving is not too deep, usually about 5 minutes, and the longest time for porpoises is 23 minutes.

In the final analysis, whales are mammals after all, and after all, they use their lungs to breathe, not anything else. The length of diving is all about oxygen utilization.

Ordinary animals can only exchange 10-15% of the air once they inhale air. Although the area of ​​whale lungs is not large, it can replace 80-90% of the air in the lungs with one breath, which is more efficient than human deep breathing.

The utilization rate is also higher. When diving, the oxygen of cetaceans can be controlled to supply only the brain, heart and swimming muscles, which is very energy-saving in terms of oxygen consumption.

The vast majority of human beings can't do it, and only a very small number of world-class breath-holding people can reduce the oxygen supply outside the core organs during long-term training.

In addition, cetaceans have a much higher carbon dioxide tolerance than humans. Many people want to breathe after holding their breath for more than 20 seconds, not because of lack of oxygen, but because of the increase in the concentration of carbon dioxide in the body, and the oxygen concentration in the body is often maintained at the highest 99% or 98%.

Human freedivers have undergone professional training, and the most important thing is to improve their carbon dioxide tolerance. Their breath-holding time can be much longer than that of untrained people, which is about three to six times longer than ordinary people.

But no matter how you use it, it is still the lung in essence.

"The breathing pattern of gray whale swimming is that during a shallow dive, it takes a few breaths first, followed by a longer deep dive."

"The depth of deep diving is about 100 meters, and the distance under water is about 1,000 meters. The duration is generally 17 to 18 minutes, and some can only last up to 8 minutes, and the longest is no more than 50 minutes."

Hearing Bi Fang's explanation, some thoughtful people made some calculations and conservatively estimated that the straight-line distance to the coast was more than five miles, nearly three kilometers. Judging from this data alone, it was impossible to escape.

Even if the gray whales exploded, if they dived for half an hour at once, they would only swim two kilometers in the sky, a little more than half of it.

[Old Fang, how many more holes did you dig? help me]

[Yes, is it okay to dig a hole artificially? 】

[In this case, wouldn’t it be good to dig one in a mile? 】

Bi Fang nodded: "Of course."

The water friends just wanted to smile, but Bi Fang, who was nodding, said lightly: "If the entire ice sheet is very thin, with a thickness of no more than 30 centimeters, there are no ice ridges within a few kilometers, and the gray whale can move forward in a straight line. Fully understand my thoughts, maintain a considerable degree of trust in me, and at the same time be clairvoyant, can accurately see the ice cave thousands of meters away, I spend two days digging the hole, that can be saved."

A pot of cold water chilled the water friends, no one thought that there would be so many problems in it.

That's right, gray whales are not like Bi Fang who walked around the ice sheet and knew the exact distance to the coast, so why did they stop?

Obviously because there is no chance for them to take a breath within the reach of their perception, the timid and cautious gray whales naturally dare not move forward, so they can only shrink here.

Of course, this cowardly consequence is justified.

The entire area of ​​the ice sheet is not as thin as the ice in this ice cave. If you look around, you will even find ice sheets and ice ridges tens of meters thick. If you want to go straight to the sea, you have to detour.

Gray whales are not "animal icebreakers" like bowhead whales. They can break through ice more than 60 centimeters thick.

And judging from Bi Fang's physical strength and the time the gray whale can last, the distance between the holes must be at least one mile, which is 500 meters, otherwise the cost of digging the hole will be too high, and Bi Fang's physical strength will not allow it, and the whale will also insist Not that long.

But 500 meters, can the whale follow Bi Fang when there is no hope?

These are all problems, which is why Bi Fang turned and turned around the cave, and did not take any action for a long time. Without solving the above problems, it is impossible to successfully rescue.

【Don't scold, don't scold】

[Is there no other way? 】

【Ah this.】

Just when everyone, even Bi Fang, was at a loss, a whale cry attracted Bi Fang's attention.

He noticed very early on that the smallest gray whale could not breathe frequently due to lack of physical strength, so he could only rely on the help of his parents.

It was the same this time, the little gray whale took a breath with the help of a big gray whale, but the fishing net wrapped around its tail firmly attracted Bi Fang's attention.

Almost every cow has a true best friend.