Speaking of coral, most people know and have seen it, and they also have some understanding of it, according to some knowledge channels, coral is actually made of the accumulation of coral polyp corpses, which is true and incorrect.

Corals are indeed made up of the carcasses of polyps, but not just the carcass, but also the living polyps.

This creature is a very strange creature, the larvae of the polyp are directly fixed to the calcareous bone pile formed by the corpses of the predecessors, that is, other polyps, and the coral we see is actually a kind of shell secreted by the polyp, so it is not easy to form this kind of thing.

In the early days, human beings could only rely on the sky for corals, which is why corals in ancient times would be so expensive, but in recent years, in fact, artificial corals have made great achievements.

Generally speaking, the more precious the coral, the deeper the sea area where it grows, the greater the water pressure, and in this way, the tighter and harder the coral.

In addition, the growth rate of corals is also very slow, and the deep water area is even busier and slower, so the price of rare corals is also very high.

Now the number of corals is decreasing, because the main enemy of corals is polluted water sources, as long as the water source is kept clean, the growth of corals in shallow water is actually not slow, but because of human activities, most places in shallow water areas have a certain amount of pollution.

In some pure sea areas in South America and Australia, many people have completed the initial cultivation of corals, in fact, they are to get a few pieces of coral, and then fix them on an iron net, and put them in the place where the ocean currents will pass, so that the corals will grow a little more every few weeks, or even a few months, and they can grow a lot when they grow for more than a year, and they can be sold as finished products.

It is also because of this that the reason why corals of other colors, especially white and gray, are now cheap, except for a few precious red corals.

After all, coral is a tropical thing, although there are a lot of them in Lin Yi's fishing grounds, but there are obviously not too many treasures, because the latitude here is relatively high, although the water temperature is not so low, but it also belongs to the cold waters.

A large area of coral, but really grow into a tree-like, but almost none, most of them are more than ten or twenty centimeters high, growing on some reef corals, most of them are white, gray, black, blue, and some yellow, pink, and big red, this is also the only valuable coral species, but the number is really not much, Lin Yi swept it at a glance, there are only a dozen plants, and they are all relatively small, only about ten centimeters, there is no value in picking.

Compared to corals, Lin Yi didn't know much about them, but he knew that these corals were not picked casually.

The color of coral is different, not only the price is different, but there are also differences in itself, such as black and gray corals, this kind of coral is generally dead coral, and its hardness is very low, he will not mine it, compared to coral, the seafood that plays on the coral reef is what Lin Yi knows best.

As soon as he swam over, Lin Yi saw a few sea snakes in the distance, Lin Yi avoided them when he saw them, although he would not be poisoned in this case, but now he also has a body, although he will not be injured, it is very painful to be bitten.

What he is most afraid of in the water is to encounter a shark and bite him directly, his current situation can only withstand a hundred pounds of attack, beyond this range will really hurt him, the shark's bite force is too strong, it will really kill people if bitten, besides, if it is swallowed directly, or directly take him to deep water, he can only go to the water of 400 meters now, more than the dead.

With bursts of waves, Lin Yi swam to the top of these coral reefs, looked down, and looked at the sand on the ground, on the reef, there were a lot of sea cucumbers, these sea cucumbers are large, almost nearly twenty centimeters long, small nature has everything, in addition to these sea cucumbers, there are many shellfish on the reef, even fist-sized abalone, there are some.

It seems that this fishing ground has not been fished for many years, so these people live very comfortably.

Abalone is a thing that is very valuable in China, but it is really not too valuable abroad, especially in Australia, where the price is really not high, there are a lot of seafood that is higher than its price, but Australia belongs to warm waters, the growth rate of organisms in the water is much higher, and the temperature of cold waters is lower, so the water organisms and growth rate will be much lower, the body size of fish in warm waters for a year, cold waters may take two years or even more time to grow, but relatively, the meat quality of fish in cold waters will be tighter, so the price is relatively high。

Just like the abalone here, the same size is a lot more expensive than the Australian one.

But regardless of their price, Lin Yi was very interested in it.

On the abalone's side, in the open space of the coral reef, there are also sporadic lobsters, these are Boston lobsters, the big ones are even more than twice as big as the one he had eaten before, probably sensing Lin Yi's attention to it, these lobsters also stopped, raised their big tongs, and aimed at Lin Yi, in addition to lobsters, abalone, sea cucumbers, etc., shrimp on the bottom of the sea, all kinds of fish, there are a lot of them here.

Seeing this, Lin Yi was immediately happy, which means that the ecology of the fishery is very good, and it can be easier to breed.

Countless clownfish are drilling around in the anemones growing on the reef, and it is not easy to have fun, but Lin Yi does not dare to provoke these guys, everyone knows that there are three kinds of creatures that cannot be provoked in the water, sea snakes, jellyfish, and sea anemones.

Because these three things are poisonous, fortunately, Lin Yi has recently become a fisherman, and he has also learned a lot about the ocean, and knows that some things cannot be touched casually, so as long as he sees them, he will avoid them from afar.

You know you shouldn't get hurt, but when someone knows that something is going to kill you, you're a little scared.

The bottom of the sea is much more fun than the shore, and before he knew it, Lin Yi also played in the coral reef under the surface for nearly an hour.

During this time, he learned a lot of things that he couldn't learn in books or on TV.

This is just the deepest sea area, if you dive to 100 meters, 200 meters, Lin Yi doesn't know what it will be like.

Human beings are more afraid of the unknown, when they are invincible, just like Lin Yi, before he is ready to rise to the fourth level, he will not go far from the shore, nor will he go into the deep water area, because there will be a lot of things with an attack power of more than a hundred catties below, and these things will kill him.