Taoyuan little fisherman

Chapter 449 Mass Extinction

When they arrived at Baoshi Bay, everyone put on their diving gear and got ready. Wang Tianhui took the lead in going into the water to teach them how to plant macroalgae.

He took a macroalgae with a intact root system, found a crevice in the reef, stuffed it in, and fixed it with some sand and stones from the bottom of the sea. In this way, within three to five days, as long as there was no storm at sea, it could grab the reef by itself. survived.

Planting macroalgae is very simple, and everyone will know it at a glance.

It will take a long time for them to plant so many kelp seedlings. Wang Tianhui took tools to the nearby sea area on the grounds of looking for big lobsters, and searched for coral reefs suitable for kelp survival.

There are three large-scale coral reefs in the waters near Yujia Village, and Wang Tianhui even named them.

The place farthest from Yujia Village is called Panzi Reef. As the name suggests, it has a large area, with a depression in the middle and high surroundings, like a big plate. If it is planted with giant algae, it can recreate a fragile A. coelosaurus fossil The nearby underwater forest of the same scale as the giant algae.

The second one is called Spike’s Tooth Reef, which is made up of independent coral reefs like Spike’s Tooth. It should be very convenient to plant giant algae here, and this place has a lot of lobster and abalone. Fishermen in the village like to come here to fish for seafood.

The third Wang Tianhui gave it an interesting name called Buju Reef, which is a coral reef group composed of many small coral reefs, each cluster stretching for several miles, covering a very large area.

Wang Tianhui first went to Panzi Reef. There are a lot of seaweed here, which is very suitable for the survival of giant algae. The variety of marine life is not rich. After the giant algae grows, it will attract many marine creatures. This is equivalent to the development of a fishing ground. .

Spike Reef is also good. It is still the favorite place for sea cucumbers, abalones and crustaceans. It is simply a natural base for raising abalones.

Macroalgae is one of the favorite foods of abalone, and planting macroalgae can increase the production of abalone, killing two birds with one stone.

It's just that Wang Tianhui's family's two large boats often fish in the ocean recently, and there are not as many people diving into the sea in the village as before, which has led to the development of abalone here.

For a while, it is appropriate to catch more abalones, or put some small abalones on other coral reefs to balance, otherwise the giant algae seedlings planted here will also eat up these abalones.

oh oh oh oh.

Suddenly, a cute cry came from behind.

Wang Tianhui thought it was Dabai who came, and Dabai usually acted cute like this.

Turning his head, he saw a slippery little black guy directly arched into his arms.

Looking down, it turned out to be a little sea otter that I hadn't seen for a long time.

The little sea otter was very happy to see Wang Tianhui, and rubbed against him, barking non-stop.

It has been active near the sea, and Wang Tianhui hasn't been to the sea for a long time.

The little sea otter has grown up a lot and can already live independently. It seems that it is living a good life, and it is more chubby than before.

"Little sea otter, where are you going?" Wang Tianhui asked.

oh oh oh.

Find something to eat.

Wang Tianhui patted its head, "Let me take you to a good place."

Hey!
The little sea otter turned somersaults happily, and every time it met Wang Tianhui, it would be full.

Wang Tianhui swam to Buju Reef with the little sea otter.

Compared with the other two coral reefs, Buju Reef is relatively shallower, with plenty of sunshine and higher water temperature, so the seaweed is very luxuriant.

Here is a piece of green, and the kelp grows very well, almost covering the coral reef.

Fishermen seldom eat kelp, and even if they do, it is occasionally eaten by outsiders for a change of taste. There are plenty of seafood, who would want to eat it.

Wang Tianhui originally thought that the kelp would be flooded here, but he didn't expect to see this, and the result surprised him.

The kelp here is riddled with holes, almost no whole pieces, floating in the sea like rags, and this is the case for several miles.

Wang Tianhui was startled for a while, could it be that there is something wrong with the sea water?

If there is a problem with the water quality, it will be a bad dish, which is a big deal.

A higher temperature of the seawater, or a slight disruption of the acid-base balance, would be a catastrophe for marine life. The several mass extinctions of marine life on the earth were actually insignificant changes that turned into catastrophes.

A total of five mass extinctions have occurred on the earth, the most serious of which was the Permian mass extinction, which is the period when the spiral tooth shark became extinct.

The Permian mass extinction was a large-scale species extinction event that occurred between the Paleozoic Permian and the Mesozoic Triassic, about 2.514 million years ago.

If calculated by the species that disappeared, 70% of the terrestrial vertebrates on the earth and up to 96% of the marine life disappeared at that time.

This extinction event also caused the only mass extinction of insects.

A total of 57% of the families and 83% of the genera disappeared.

After the extinction event, it took millions of years for land and sea biospheres to fully recover, longer than other large extinction events.

This extinction event is the largest of the five major extinction events in geological time, so it is also officially known as the big death or mass extinction or the mother of mass extinctions.

The reason for the extinction may be the change of sea level, the lack of oxygen in the ocean, and the arid climate caused by the formation of Pangea.

The later peak was rapid and violent. The reason may be an impact event, a super volcanic eruption, or a sudden change in sea level, which caused a large release of methane hydrate, which lasted for about 6 years.

It has happened, and more than once, that a small change can end up triggering a global catastrophe.

Although the current earth is no longer as harsh as it used to be, the sudden large-scale damage to kelp still makes Wang Tianhui feel nervous. This is not a good sign.

Just when Wang Tianhui was shocked by the scene in front of him, the little sea otter seemed to have discovered something suddenly, and rushed directly into the kelp bushes.

Wang Tianhui also hurriedly followed to check what was going on nearby.

The little sea otter quickly rushed in, got under the thick kelp leaves, and then hugged a black thing.

Wang Tianhui took a closer look and found that it was a sea urchin.

Sea urchin is also called sea thorn and sea chestnut. It is a kind of seafood covered with thorns all over its body. Because of its small quantity, it is not easy to store and difficult to transport. If you have that time, it is better to catch big lobster and crab. Few fishermen are willing to catch it.

There are many kinds of sea urchins, black, brown, red, big and small. Many people like its deliciousness very much, but its popularity is far less than that of lobster and crab.

What the little sea otter caught was a black sea urchin. It was as big as the mouth of a bowl, several times bigger than normal ones, and looked fat.

Sea urchins are the favorite food of sea otters. The little sea otters were very happy to catch such a big sea urchin.

It found a rock from the bottom of the sea, and began to knock the sea urchin madly, smashing its yellow color out after a few strokes, and had a full meal.

At this time, a wave of ocean currents rushed over, and the kelp was lifted up.

Wang Tianhui was surprised to find that the back of the kelp was black and densely covered with sea urchins.

(End of this chapter)