Only after entering the river did everyone realize that crocodiles are much more than just those who climb on the shore to bask in the sun.
Sections of "dead wood" floated to the surface without warning, as if they had been buried under the silt of the river before, until the raft on the river stirred the water and dispersed the silt, allowing these big pieces to float.
The tens of millions of viewers in front of the screen all know what these dead trees are, out-and-out Nile crocodiles!
They are not the little guys called Nile crocodiles in the Egyptian desert. In fact, the average body length of West African crocodiles is less than 1.7 meters. Instead, the average length of adult males is 3.5 meters, and the average length of adults is more than 4 meters.
Huge thing!
Space is three-dimensional. When the body length doubles, the weight increases exponentially.
The West African Nile crocodile is 1.5 meters long and weighs no more than 30 kilograms. However, the 3.5-meter Nile crocodile can weigh a terrifying 300 kilograms. Compared with doubling the body length, the weight directly doubles.
Ten times more!
If two crazy crocodiles were to attack forcefully, they might be able to overturn the entire raft just by relying on their weight, and then it would fall into the water, but Bifang would have no choice but to make the decision.
The viewers who realized this were all frightened. For a time, the number of viewers and comments in the live broadcast room increased simultaneously.
[There are so many, is this too much? It feels like double digits on the surface of the water]
[How many crocodiles are there on earth? The African rivers are too scary, right?]
[What the hell, you won’t really attack, right?]
[It all came out at once, the feeling is too keen]
Bi Fang calmly analyzed and slowly pulled out the skewer in his hand from the mud.
"At the same time, thermal sensitivity allows them to maintain body temperature by alternately basking in the sun and entering cold water, and chemical sensing capabilities can help them find the most suitable habitat."
Crocodiles usually float on the water, with only their eyes, mouth, and nose exposed.
[No wonder all the nearby crocodiles reacted as soon as Lao Fang’s raft entered the water]
"But the exact functions of these organs have been poorly understood before. Only now do we have a general understanding. In fact, we can roughly understand their functions from their names."
No matter whether the crocodile dares to attack or not, it will attract less attention or less attention.
Maybe some kind of hippopotamus king?
Not even ordinary hippos dare attack, let alone the King of Hippos.
"Just looking at the appearance, Nile crocodiles are covered in scales. Many people subconsciously think that their touch is weak, just like the skin wrapped with calluses is often slower to touch than normal skin. In fact, it is just the opposite. The Nile crocodile's body surface
It has many sense organs and is more sensitive than normal human skin."
Not everyone has a memory palace.
"But we don't need to worry for the time being. If the crocodiles really want to attack, you won't be able to see them surface. If they can surface, it means that they have no desire to attack yet."
This is probably what the crocodiles think.
[Too 6, Fang Shen is really pinching him with both hands, and he has a crocodile mentality to pinch him to death]
"The crocodile's scales are just an expression. We have to look at the essence through the expression. In fact, more than 100 years ago, people discovered that there are many small, protruding black spots on the head, jaws, mouth and between the teeth of the crocodile. These small black spots,
Hey, the little black spots are not the dirt left by long-term survival in the wild, but they are there from birth."
"If the crocodile really intends to attack, it will not reveal its body. Instead, it will lurk quietly. After all, no one would let the enemy see themselves before launching a sneak attack. This is too stupid."
Compared to the panicked audience, Bi Fang seemed to be there and not worried. He had experienced too many similar scenes.
[The crocodile’s underwear was all touched up]
This is why Bi Fang insists on using a skewer instead of a rowing oar. The water waves caused by the rowing oar are larger than those of the skewer, making it easier to attract the attention of crocodiles.
Human beings are often afraid of the unknown, but when the opponent's next move can be accurately predicted, the fear is greatly reduced. Of course, fear is still there.
Especially all crocodiles are motionless. If they didn't know that this is the African savannah, many people might think they are fake crocodiles.
"In the developing caiman and its embryos, small black spots on the head have already appeared before the skin begins to divide and form scales. The Nile crocodile is even more exaggerated, with additional small black spots developing all over the body. At that time,
People see it as a unique organ."
[This is probably the Great God]
"A more specific related paper was published in the Central State magazine "Evolution and Development". If you are interested, you can check it out."
As the stick moved, Bi Fang gradually rowed out more than ten meters.
"This means that crocodiles can detect surface pressure waves, respond to changes in water pressure, track the movement of prey in the water, and quickly find prey even in the dark."
"Those protruding black spots are unique sensors. We call them dome pressure receptors, or integumentary sensory organs, which are sensory organs."
It looks like you are basking in the sun, but it is actually a standard action for breathing.
Crocodiles are truly hyperopic. They cannot see clearly at a distance of tens of meters. On the contrary, due to the different refractive index of light in water and air, crocodiles can rely on their body senses to observe underwater.
Be more clear.
"I came out to take a breath now. You were probably alarmed by me. After some observation, I just came up to take a breath."
Just when everyone thought they could get through safely this time, the water next to the raft rippled slowly and extremely thinly.
Bi Fang nodded and said: "It is indeed amazing. The sensory organs of other vertebrates are incomparable. For example, our skin has a distributed sensing system, and crocodiles concentrate this distributed sensing system."
, turned into a distributed multi-sensory micro-organ.”
Whether it was external sensors, far vision, or ventilation, Bi Fang showed an extremely detailed understanding of the crocodile, and even the psychology was very tight. It was almost prejudgment. Such predictability made the audience nervous.
Got soothed.
【This is too exaggerated】
[The miracle of living things, natural evolution is so amazing]
Those in the river surfaced silently beside the boat, stared at the raft silently, and finally sank silently.
"Besides, we are on a raft, and the entire target is too big for the crocodiles. They will not attack easily."
【Underwear? Make me healthy】
Bi Fang frowned.
There are all crocodiles lined up along the river bank, and they still look scary.
"Furthermore, crocodiles have a keen sense of body and are farsighted. They can better observe the status of their prey underwater."
How could scales that look very thick be more sensitive than human skin?
Isn't this a joke?
For crocodiles, the entire raft is too big. Perhaps the length of the raft itself is only more than three meters and less than four meters, which is not as long as some well-developed Nile crocodiles, but Nile crocodiles cannot grow more than two meters.
Width!
The area of the entire raft is close to eight square meters. Including Bifang standing upright on it, the overall height is more than two meters and the volume is close to 16 cubic meters. From the perspective of a crocodile, this is a monster among monsters, or a monster.
A monster that can live in water.
"But the crocodile's outer skin sensory organs are completely different from other vertebrate sensory organs. It combines the detection of touch, cold and heat, and chemical stimuli, and has evolved into an advanced armored and sensitive skin that is even more sensitive than our human skin.
many."
Facing the battlefield for the first time, new recruits will be able to fight with both sides, but veterans of hundreds of battles will never be able to do so.
This further proves Bi Fang's professionalism, at least other wilderness survival anchors do not have such ability at all.
Audiences are now somewhat used to the practice of dumping papers when they disagree.
As soon as these words came out, everyone was shocked.
【Is he so awesome? 】
Is it a crocodile?
No, if a crocodile appears, the water will not behave like this at all.
Such dense ripples look more like the ground is shaking.
Bi Fang raised his head.
On the plain in the distance, a dark thin line appeared in the field of vision, and it was getting thicker. It was obviously getting closer and moving very fast.