Agriculture Idol

Chapter 197 The Great Ebb Tide in Spring

It was said that it was a three-day spring outing, but the students actually left the school the afternoon before, took a sleeper bus overnight, and then took a bus chartered by Li Chengxin in the town, and pulled a group of students to Hongming early in the morning. The town hall of the village.

Li Chengxin discussed with the students before that the conditions of living in the hall are relatively poor, but the school pays for it and it is free.If you want to live comfortably, you can also go to the nearby resort at your own expense.

The families of the students in Lanhai City are actually pretty good, but since it is a group spring outing, of course it is more lively to live in Datongpu.

The graduate students who led the team had been to Hongming Village last year and knew Li Chengxin and some villagers very well. They quickly arranged everything. After eating the steamed bun breakfast set, they took the students to the experimental coast of Li Chengxin's house.

People in the village had known for a long time that there were students coming again recently, so after the village became lively early in the morning because of the students' breakfast, they all went out to join in the fun.

In this season when the water temperature rises and everything comes alive, the coast of Hongming Village has also changed greatly.

At a glance, the sea line has receded a lot, revealing a large sandy beach in front of it.Guapi and a few puppies ran around on the beach, stepping on a lot of wide dog paw prints.

"Wow! It's really a big change!"

"This scene is too amazing!"

Several students who had been here before were surprised.

One of them walked to the middle of the beach: "It probably started from here before, it should be all underwater, right?"

"Yes." Li Chengxin replied comparing, "This is the tidal range of the spring tide."

This day is the best day of the year to pick up shells and observe rocks on the seabed. The maximum dry-full difference (the difference between full tide and dry tide) on the coast can even reach 2 meters.

The reason for the spring tide comes from the universe. When the earth, the moon and the sun are in a straight line, the tidal forces of the two bodies, the moon and the sun, will act in the same direction, pulling up the sea water significantly.

The huge turbulence of sea water can create various wonders in the sea, such as the spring tide of Qiantang River, the "Water Besieged City" of Mont Saint-Michel in France, the Naruto whirlpool in Japan and so on.

And many rocks that are usually hidden under the sea will also appear. For Hongming Village, the uneven stone beach near the coast can also emerge from the water.

The graduate student who led the team introduced to the students: "In fact, the time near the spring tide is the most suitable time for coastal surveys, but everyone is usually busy at this time, so there has been no chance."

The "spring outing" this time was really named "practice class". In any case, we had to do some business, mainly to observe the biological activities on this coast.

After the graduate student who led the team finished speaking, the students cheered and scattered to play around on the coast, but at any rate, everyone had small net bags and containers in their hands, and they could put the creatures they found in them.

Naturally, Li Chengxin couldn't do nothing, so he also took his tools and walked into the water.He and several graduate students went straight to the waterline, first to give up the tidal flats to the students, and second, to always pay attention to the safety of those students who were too close to the water.

Looking at the rocky beach below the waterline, Li Chengxin said: "I always feel that there are some creatures that can be found here. It is unlikely to come here, but now I feel that the quality of the bottom sand is very good. There should be many creatures hiding nearby. "

Li Chengxin grabbed a handful of sand under the rocky beach, it was soft and very comfortable to touch.

Most of the sand is rolled down from the artificial beach, but it has a different texture from the sand on the artificial beach, because the sand has been "remade".

The hero who remade the sand was slowly moving in the crevices of the stone, and was picked up by Li Chengxin.

"Wow! What a big sea cucumber!"

A few students came over: "Is there any sea cucumber to eat today?"

This question was obviously asked after watching the live broadcast of Li Chengxin and his father catching sea cucumbers.

The graduate student who led the team shook his head: "All the creatures caught today are not edible, they are just for recording."

The sea cucumber in Li Chengxin's hands is a species called "fake sea cucumber", which is about 30 centimeters long.This is a large species of sea cucumber that can grow up to 1 meter in length.

There are quite a lot of sea cucumbers in this area, more than what Li Chengxin and his father caught after working for a long time a few days ago. It must be because of the low tide that they all gathered under the waterline here.

There are so many sea cucumbers, and there is a lot of sand to clean up. A large beach of sea cucumber excrement can be found every few stones.

Among these sea cucumbers, Li Chengxin even found a black sea cucumber that was less than the width of his palm. Last time, he and his father only found one.

"The number of black sea cucumbers is really very small, and the less they are, the higher the price will be." Li Chengxin sighed and threw this sea cucumber into a bucket aside, huddled with its relatives, and waited for the students to register. They will be returned to the sea to continue to be raised.

Sea cucumbers are rich in collagen and full of elasticity.This coelenterate creature obviously has no heart or brain, but is quite sensitive to external stimulation. After being played with by several students for a few times, it began to harden and bulge into a round shape, like a ball.

"This is so much fun, I've never played with live sea cucumbers before!" The students came over and each took one and played with it, loving it.

The graduate student explained: "Sea cucumbers, echinoderms, are similar to starfish, and have catch connective tissue. Catch connective tissue is a type of tissue that these primitive creatures with spiny skin can freely change the hardness of their bodies."

As he spoke, he picked out a purple sea urchin and a blue petrel from the marine life discovered by the students.Blue Petrel is a dark gray starfish that likes to cling to reefs.

Place them on the sand and secure a circle around their general outline with a few branches.

After a while, the plump sea urchin's spines retracted in one direction and began to squeeze through the gaps between the branches.And Lan Haiyan erected five tentacles to explore the branch circle, and then moved out of the branch circle with five corners and shrinking body.

After leaving the circle, the two returned to their original appearance. This is the effect of stiff connective tissue, which amazed the students.

On the other side, Li Chengxin was still picking up sea cucumbers.

"Hey, this one is so big!" He said as he changed to a big net and dipped into the water to fish it.

"Huh? Isn't this a sea cucumber?" Seeing what Li Chengxin fished up, everyone was surprised.

The thing in the net bag has smooth skin with brown dots on it, which looks limp.

"Spray! Spray water! Spray purple water!"

When Li Chengxin took the thing out of the net bag, a large jet of purple juice sprayed out from the side of the thing, poured Li Chengxin's pants, and dyed the nearby sea water.

"This is a sea rabbit!" Everyone recognized it one after another.

"Are the sea hares actually that big? The biggest ones in the school aquarium are no bigger than a fist? This one is at least four times as big!"

"The ones raised in the sea can indeed grow wildly."

(End of this chapter)