Wei Hang and others are preparing for going to sea, and all kinds of supplies are being gathered. At a glance, there are almost ten large fishing boats docked at the wharf of Tangjia Village, and it is no wonder that everyone proposed to withdraw the wharf from Tangjia Village.

In the future, the wharf can only dock some small cruise ships and the like, and large ships will have to change their course.

Too many motorized ships will also have an impact on the Chinese white dolphins.

According to the research of those biological experts, the Chinese white dolphin has smaller eyes, located on both sides of the head, black eyeballs, poor vision, and its position and direction of objects mainly rely on the echolocation system, there is an air sac under the nostrils, and the sound is made by the opening and closing of the nasal congestion meat, and this kind of voice is concentrated in a special organ composed of fat at the forehead bulge, and is emitted at a certain frequency; the different frequency signals reflected back by the sound when it encounters different objects are received through a groove composed of fat in the lower palate of the dolphin, and transmitted to the inner ear for positioning.

It is said that although this echolocation system is complex, it reacts extremely quickly and accurately, and can measure the size, shape, density structure, and properties of the object in front of it, and make judgments and reactions.

It is precisely because of this echolocation system that the interference of too many motorized ships will cause the Chinese white dolphins to lose the accuracy of their positioning, which will have a great impact on their lives.

Looking at the seaside, the groups of cute dolphins chasing the waves, everyone is reluctant to hurt them.

Today, they are one of the children's favorite animals. Children who come here to play love to be at the beach and go to greet the white dolphins.

The main reason is that the Chinese white dolphins understand human nature, are close to humans, and ordinary people tease them, but they will not refuse, which has caused their high popularity. On the top of the animal ranking of Tangjia Village, it ranks second. ranked first, naturally it was the naturally cute Kaise, who was a group of little guys without discipline.

"Hey, let's take a look. I caught a transparent shrimp, it's so big!" one tourist suddenly shouted.

Everyone looked over, and sure enough, they found that the kid proposed that he was an animal that looked very much like a shrimp, and his whole body was transparent. One of the tourists couldn't help but touch it with his hand and couldn't help but exclaim:

"It feels like it's scaly, it's tough, it's jelly-like. Except for a small orange orb inside its body, it appears to be completely transparent. ”

People in the neighborhood are attracted to it, after all, it is a new thing, and everyone will have a curious mindset.

"It's not shrimp. One concludes with certainty.

Just about. Wei Hang was also beside him, and after a few glances, he knew what kind of animal it was. This kind of thing is relatively rare, and it is one of the most rare animals in the ocean, right?

"It's called the sea squirt, and it's a marine invertebrate. Their bodies are gelatinous and move through the water by absorbing water, feeding on plankton. Its transparent form protects itself from predators, after all, transparency in water is a good camouflage. Wei Hang explained.

This scene naturally attracted the surrounding biological researchers. They looked at it and said with a smile: "Xiaohang's eyesight is really good, that's right, it's a bottle sea squirt." It's not a new species, it's been discovered very early. However, this creature is quite rare in the Northern Hemisphere. It usually lives in cold seas, with the Southern Ocean being the most numerous. ”

They tell the tourists. The "sea squirt" is a translucent, jellyfish-like marine creature that is not important in the marine food chain, but it is an important member of the greenhouse gas supply to the ocean. This view has greatly enhanced the status of the sea squirt among marine animals.

"Xiao Hang was wrong just now, in the Southern Ocean, there are still a lot of such creatures. The researcher corrected.

Wei Hang shrugged his shoulders, he is also a human being, and it is not surprising that he is wrong.

Clusters of sea squirts are the size of a human thumb and billions of them live in the ocean's "hot spots" that transport tonnes of carbon from the ocean's surface to the depths of the ocean every day.

"The sea squirt travels far downstream during the day and back upstream at night, a process known as vertical movement. In this way, the sea squirts release excretory bodies into the deep sea, where few animals can eat them. This also greatly increases the chances of carbon being diverted from the atmosphere. ”

"They carry carbon up and down every day, and their lives are too monotonous, right?" said one tourist, who suddenly felt pitiful.

Everyone laughed when they heard this. How many creatures in nature do not live monotonously? They may exist only for the purpose of reproduction, so that the population will not be wiped out.

For example, mayflies, juvenile aquatic insects, adults do not eat, the life span is very short, the shortest is only one day, but in this short life, it blooms the most brilliant brilliance.

"Speaking of monotony, I'm afraid there is no creature more monotonous than a mayfly, right?" said one tourist.

Adults do not eat and have a short lifespan, generally only a few hours to a few days, so there is a saying that "life is born and dies". Adult mayflies are responsible for the task of mating, reproducing, and reproducing their offspring during their short lifetime.

"Yes, mayflies are the most pitiful, they have to reproduce in a day, and then they have to die in just a few hours. ”

When human beings think about it, it is indeed pitiful enough, and they feel that what is the meaning of life?

"As long as their mission is accomplished, life is the brightest. The biological researcher laughed.

"As krill populations decline dramatically, there is likely to be a significant increase in sea squirts. Another researcher pointed to the sea squirt.

The sea squirt is a gelatinous animal that resembles a jellyfish, but there are basically no other animals that feed on it. This means that the sea squirt cannot feed the whole of Antarctica in the same way that krill does.

When the visitor touches the sea squirt with his finger, it shoots a powerful stream of water through the hole in the spout, and then it falls limply from its original upright state.

"What you may not know is that sea squirts have a circulatory system that is unique among chordates: it circulates in open tubes, which is rare among chordates, and what is even more amazing is that the direction of their blood flow is reversed every few minutes, which is absolutely unique. ”

Wei Hang knows this, and he has seen the introduction of this creature before, and he feels quite interesting, so he remembered it.

In addition, he also knew that newborn sea squirts resembled small tadpoles, with eyes and brain vesicles, a well-developed tail, a notochord in the center, a neural tube on the back of the notochord that went straight to the front of the body, paired gill slits in the pharynx, and small sea squirts that could swim freely in the sea.

However, after a few hours, the front of its body gradually grows protrusions and attaches to other objects. Subsequently, the tail gradually atrophies and disappears. The neural tube also degenerates, leaving only one ganglion.

Therefore, there are no surprises in this world, only you can't think of it. (To be continued......)