We looked over to where Lisa was pointing and saw a black round thing underneath the crab shell. The thing was black all over, covered in long black thorns, like a small black ball covered with hair. I was curious, so I gently touched it with my hand, and it felt a little prickly.

The old ghost had never seen this thing, so he asked curiously, ", what is this, so ugly?" ”

"It's called a sea urchin!" I said, "It's another ancient creature of the ocean, a close relative of starfish and sea cucumbers, and it's an invertebrate. According to scientific research, it has lived on the earth for hundreds of millions of years, and is one of the longest-lived marine creatures on the earth. Due to the vicissitudes of the sea, fossils of sea urchins have been found on the Tibetan Plateau in China. Many extinct species are marker fossils of the Paleozoic and Mesozoic eras.

They existed a long, long time ago, and by the early Triassic period, their numbers began to increase. From the Jurassic to the White Age, different species of echinoids were derived. In the Mesozoic and Cenozoic eras, it was their most glorious period. However, most of the fossils are only found in certain areas and in certain shapes. In Texas, USA, it can be found in white limestone.

Sea urchins are generally spherical, disc-shaped, or heart-shaped, without wrists, and their endoskeletons heal together to form a solid shell. It is not only a valuable Chinese medicine, but also a kind of high-quality seafood delicacy ......"

"You can pull it!" As soon as the old ghost heard that I was talking about the best seafood delicacy, he immediately covered his stomach, as if he had a lingering palpitation about what he had just experienced. He said to me, "When you say that, my stomach starts to hurt!" You shouldn't study history. You should study biology, like a special expert! If Lao Tzu believes in you again, sooner or later he will have to die at your hands! ”

What the old ghost said made Lisa and I laugh.

So I said to the old ghost, "Believe it or not!" You can't blame me for this, you can only blame yourself for not being able to control your mouth. But ......"

Lisa and the old ghost looked at me for a moment, and quickly looked at me with puzzled eyes.

I said, "But I don't know how I can live in the shallow waters of the ocean?" ”

Lisa listened to my question and said, "If it's a sea urchin, then I still know something." I've just heard about it before. But never seen it. As far as I know. Sea urchins are distributed on the seabed from the intertidal zone to a depth of several thousand meters, and are mostly concentrated in the rocky or sandy seabed of the coastal zone, or have a wide distribution, or are confined to specific sea areas. Varies by species. ”

Hear Lisa's explanation. I nodded thoughtfully.

Lisa continued to analyze: "Now. There are only two things to say about sea urchins: one possibility is that we are already close to shallow waters; Another possibility: This species of sea urchin is special. But...... I'd rather be the former. ”

I very much agree with Lisa's analysis, and analyze the situation in front of me, is it the former or the latter that she said? The old ghost was not very interested in the factors we analyzed, so he went back to the crab shell alone and reached out again to touch it. For him, black pearls are the best thing, and the most practical good thing!

In fact, it's not that I don't love money, on the contrary, I like the black pearl that the old ghost gets. But, compared to that, I'm more concerned about the whereabouts of Duoduo and how we get out?

Looking back on the process of our coming here, Lisa and I analyzed that it would definitely not be the former. Because it is impossible to reach the incoming sea from the perspective of distance or time. In my memory, we came down very deeply, and it would not be such a short distance to reach the near water.

Lisa and I were both a little frustrated when we analyzed such results......

Only the old ghost happily dug out the giant crab almost all over. Looking at his appearance, you can see that he must have gained a lot. A closer look at his hand revealed that it was really fruitful: in addition to the black pearl just now, four or five more were found, but the size was different.

In addition to the black pearl, there is also a large white pearl. After Lisa saw it, she was extremely fond of it, and hurriedly wanted to take it and take a look, but the old ghost quickly retracted her hand in distress. It's like Grande, who doesn't even give us a look.

The old ghost looked at him like this, and said disdainfully: "Cut, who is rare!" ”

After saying that, he turned around, unwilling to deal with him again. I winked at the old ghost, and signaled that he might as well be a favor, and that it would be better to give the big white pearl to Lisa, and maybe he might be able to win her heart in one fell swoop. But the old ghost looked at the big white pearl in his hand, and then at Lisa, and decided to keep it, and shook his head at me.

Actually, when I saw the old ghost find so many pearls, I was very blushing. He said to him: "Captain Shi, your 'monopoly thinking' is not right!" As the saying goes, those who see have a share, you can't just swallow these pearls alone! ”

Although the old ghost is a little reluctant, but thinking of this journey, we are all blessed and share hardships. He didn't say anything, nodded in agreement. Actually, that's what I said, and I didn't really want to share his pearls. Seriously, I've never bothered with the old ghost about these little details. It is estimated that the old ghost just wanted to tease Lisa, but he didn't expect it to be self-defeating.

I'm used to the old ghost's virtue, but Lisa is a girl after all, and she occasionally loves to get angry. So I asked the old ghost to coax him, but the old ghost couldn't get over it because of his face. Then it was just me, and I walked up to Lisa and comforted her: "Lisa, don't be angry, the old ghost was just playing with you just now!" ”

"You don't have to say nice things for him, don't I know what kind of person he is?" Lisa said angrily.

Just wanted to persuade her again, but suddenly heard the old ghost shouting: "Boss, come here!" ”

I thought it was an old ghost who wanted to interrupt it, but looking at his extremely strict expression, I knew that something new must have been discovered. Hearing the old ghost say this, Lisa stopped being angry and walked with me to the old ghost.

When we got to the old ghost, I almost didn't get out of my breath! Out of the passage where we came up, there was a man floating there! The man was wearing clothes that looked familiar to me, not someone else's, but the one Duoduo had worn before he fell into the water!

My heart suddenly "clicked", don't be! Don't let my worst fears happen! Although all along, I didn't mention it, it was because of fear and worry. Anyway, I had to bite the bullet and step forward......

When I got closer, I picked it up with my hand, and it was okay, it was just a piece of clothing. But how did Duoduo's clothes end up here? (To be continued......)