Sea-hunting: With the system in hand, my eyes are the ruler

Guan San was watching from the side. It was the first time he had seen something like this. "Why does this thing look so much like a corpse turtle?"

Jiang Han was speechless, "Why do you think everything looks like a dead turtle?"

Last time, Cai Chengyan thought that the giant isopod looked like a corpse turtle, and now Guan San thinks that the Chinese horseshoe crab looks like a corpse turtle.

Jiang Han wanted to pick up the Chinese horseshoe crab, but Lu Nanfeng shouted, "Be careful, its tail can sting you when it's nervous."

Jiang Han nodded, "I know."

This Chinese horseshoe crab weighs more than ten kilograms. Some people just grab the tail of the horseshoe crab.

Jiang Han felt that this was too rough and was afraid of hurting the horseshoe crab, so he chose to carefully pick it up and put it into the sea.

After Jiang Han released this horseshoe crab, he dug out the sand and pulled out another Chinese horseshoe crab that had already burrowed into the sand.

The little girl looked at it in shock, "There's another one here!"

Everyone except Guan San was a little surprised. They all thought Jiang Han was so amazing that he knew there was such a big Chinese horseshoe crab under the sand.

The little girl's father was very curious and asked, "How did you know there was something underneath?"

Jiang Han smiled and started talking nonsense, "I grew up on the island, so I'm very experienced in this. I can tell where something is just by looking at it."

The little girl and her family admired Jiang Han very much. People at the seaside are really amazing. They can tell where something is just by looking at it.

Guan San thought of something, "It should be the pore. Jiang Han, you must have seen the big seven holes, right?"

Jiang Han was stunned for a moment. Generally speaking, there must be pores in this situation.

But now that he has a system, he hasn't paid attention to the spiracles in a long time. He just pulled the Chinese horseshoe crab out without even checking if there was a spiracles.

"Yeah, yes. There are big pores."

Jiang Han felt that this Chinese horseshoe crab should be a female, and the one just now should be a male.

Jiang Han carefully picked up the Chinese horseshoe crab and put it into the sea as he did before.

The little girl relaxed when she saw both creatures go into the sea.

Lu Nanfeng smiled at the little girl. "Doesn't it look scary? But it has been protecting us all this time?"

The little girl looked at Lu Nanfeng with confusion. "This is the first time I've seen such a terrifying thing in my life. How could it possibly protect us?"

Lu Nanfeng was very patient, "You must have been vaccinated, right?"

The little girl nodded, "I've had many vaccinations."

The little girl felt pain in her arms when she thought about it.

"The animal we just saw is called a horseshoe crab. Besides the Chinese horseshoe crab, there are many other species. They all have one thing in common: they have blue blood. This blood can effectively detect bacteria in vaccines and medical devices, thus preventing human deaths."

The little girl blinked. "Is it that powerful?"

"Yes, it can be said that it saved the lives of all mankind. And the Limulus amebocyte lysate is still widely used today."

Jiang Han glanced at Lu Nanfeng. He was indeed a medical student and knew quite a lot.

The little girl saw a lot of shells on the beach and reached out to pick up some. After picking up one, she was a little disappointed and asked, "Why is it empty?"

Jiang Han took a look at the beach. They were a little late. Many things had already burrowed under the sand.

Jiang Han dug out two cat's-eye snails from the sand, and then dug out a few white shells and threw them to the little girl.

"There's a beach where you live, too, and it's much bigger than this one. If the tide goes out, you can go fishing there too."

The little girl clapped her hands happily, "Really?"

Jiang Han smiled and said, "Of course it's true. But you don't understand the tides, so you still have to be careful."

Jiang Han did not continue to waste time on this beach. He came here purely because he saw the Chinese horseshoe crab.

Jiang Han and Guan San went on a speedboat ride. The little girl's family didn't expect that they could experience the feeling of riding a speedboat.