Australia's Great Barrier Reef, the home of Abisser.The aircraft carrier has been drifting eastward along the current, Abisser couldn't push this big guy at all, so he had to follow the aircraft carrier to continue drifting to the Pacific Ocean, and he didn't follow the trip of the siren and Xia Yi at all, so the big octopus was very happy, it no longer had to worry about sleeping hard, and there would be a lot of holes in the tentacles.Molloscans can't afford toss, and how much longer the flesh doesn't mean that they can poke it casually, looking at the back of a certain octopus escaping, Xia Yi sympathized at first, and he couldn't go in when he arrived at the door of the house, but when he arrived at the Great Barrier Reef, he instantly abandoned the idea just now.The depth of the water here is really limited, just enough to cram Abyser in its entirety.The worst thing is that there are too many obstacles in this sea area, it is like a tropical rainforest composed of corals, and you can't even see the scene a few meters away, although the sea water is clear and blue like a jewel, but it can't resist these coral reefs are simply growing against the sky, and some have been exposed to the sea.Xia Yi's eyes straightened, and he saw a lot of coral reefs, but they were all rolling on the bottom of the sea, and the occasional raised high piece was definitely standing out from the crowd, and it was definitely not like this when he surfaced on the surface and could see a patch of coral reefs, those corals were actually out of the sea, and they showed their bodies directly in the sun.The siren seemed to enjoy the warm sunshine, and after swimming some way onto a coral reef that was outcropping, he sat and looked up at the bright blue cloudless sky, with its pale silver tail still submerged in the sea.The hair was scattered on the shoulders, the small jade-white conch hanging from it was clinging to the chest, and the fins on the elbows and waist had been reborn.The ivory-white bone spurs supported the gauzy fins, still translucent, and when the sea breeze blew, a few strands of wet hair moved slightly, revealing the evenly symmetrical butterfly bones and the two distinctly light red spots.Especially the layers of coral on the side, some of the branches are thick and curious to stretch out a few trunks, and some are like a pile of mille-feuille, Xia Yi found that half of the coral reef is gray-white giant mussels, which happens to be in the part of the exposed sea, which makes the fish tail covered with pale silver scales slip into the sea water with the mussel shell, that scene is simply the most beautiful fantasy style illustration.No matter what kind of personality a person is, when he sees a beautiful scenery to this extent, he will subconsciously slow down his breathing, stare at it with fascination, and suddenly forget himself.A triangular fin emerged from the water, silently paddling through the water from a distance, and the sirens just turned their gaze from the clear sky to Xia Yi.Before he could notice Xia Yi's distraction when he saw him, he had already caught the strange appearance of the sea, and a sharp sound wave that woke Xia Yi up echoed, and he watched in horror as the siren violently held on to the coral reef, and his body fell into the sea in an arc, and the startled water splashed in an instant blurring his vision.Xia Yi didn't understand what was going on, so he dive down.A tiger shark more than four meters long with stripes on its body was churning in the water, its terrifyingly large mouth biting, its sharp teeth gnawing off a small piece of the coral reef, and the sirens did not make any contact with it head-on, firmly attached to its dorsal fin, and quickly turned with its fierce movements.The mermaid's body length is significantly different from that of such a shark, only half of its length, and the flexibility of the tiger shark is not even touching it even if it turns in place.The ferocious creature that dominated the sea became irritable and slammed into it even more ferociously.Xia Yi stepped back and firmly wrapped the water layer around his side.The dozen or so ice blades he condensed hovered in the seawater, looking at the fiercely churning sea water in front of him, and he didn't know how to help the sirens for a while.The merfolk and tiger sharks are too tightly attached.This life-threatening fight was like a fierce and vigorous dance, this tiger shark, which was not yet an adult, was no match for the sirens, although it was already a fierce species among sharks, and its reaction was extremely fast, but its slightly large size made it toss from the surface of the sea to the bottom of the sea, and the afterglow could only be aimed at the flamboyant pale silver tail, and when it opened its mouth to bite fiercely, it pounced in the air.The tiger shark only pursues moving objects, although it originally intended to attack Xia Yi, but this will be provoked, and it will be rampage, and what makes Xia Yi dumbfounded is that this guy's teeth are simply indestructible, and the giant mussel the size of a chair was gnawed by its fierce blow to the surface of the shell with obvious cracks, and the surrounding corals were also scattered in pieces.Compared to the tiger shark, which is hard-hitting, the siren is much more flexible, and can bend out a very clever arc from the fingertip to the tail at will, just avoiding coral reefs and obstacles, and still firmly clinging to the tiger shark's back like an appendage.The skin on the shark's back is obviously tough, after touching this guy's tricks, the siren mercilessly left five blood marks on its flank, the injured tiger shark was even more irritable, the movement was completely disordered, the siren took the opportunity to hold down its dorsal fin, this time it was not a shallow and short wound, half of the five fingers were inserted, no matter how painful the tiger shark tossed, this action could not be thrown off.The blood spread in the sea, staining the snow-white spray red.The ferocious predators of the sea are finally feeling the fear.It began to swim out desperately, extremely fast, and it was trying to escape.Because blood stimulates the senses of many fish, including its own kind, and it is only an adult tiger shark, in order to save its life, it has to rush into natural lakes surrounded by coral reefs, which often have only one gap for it to recuperate, and can block the entrance to ambush when it encounters opponents.The sirens didn't want to hitchhike with it, so they let go of their fingers halfway through, and instead of looking at the tiger shark that had run away, they swam close to Xia Yi, and gently rubbed his chest and back with their arms ambiguously and affectionately.This is to know if Xia Yi is injured.But because of the water layer, Xia Yi could only see a faint red fading around his body.The siren's chest rose and fell a little, and Xia Yi found that the mermaid also sweated, but those crystal droplets of water seeped out from the forehead and shoulder blades and immediately melted into the sea.The sirens did not express any dissatisfaction with the layer of sea water that Natsu Yi wrapped around his body.Just touch and hold it tightly, and don't let go for a long time.The sea is calm again, if the corals here look like tropical rainforests, then the towering coral reefs are like steep cliffs, and the most interesting thing is that many of the corals are actually in the shape of lotus leaves, and even a group of butterflyfish that look like Ganoderma lucidum and have yellow markings all over their bodies and black eye-like spots on their tails have swam back.There were also many large and small eyes emerging from the gaps, and a fist-sized mussel tentatively opened its shell slightly, and the light that happened to refract made Xia Yi squint.It is a round bead embedded in the flesh of a mussel.Siren Xia Yi remembered the scene just now, and began to feel a little afraid.The tiger shark is too fierce, this is one, if a group of people originally thought that the sea monster was a creature with no natural enemies in the ocean, now I think about it may not be, even if there is a size as big as Abisser, the mistake is not to have a hard carapace like Gollum, otherwise there is always something to scruple about, the teeth of the tiger shark are even crushed by the mussel shell, this bite down, not dead is also seriously injured Feeling Xia Yi's mood is strange, the siren opened the distance in confusion, and carefully looked at Xia Yi's appearance, because he didn't find a wound, he was very puzzled: the shark didn't dare to come again.Xia Yi didn't answer, just stared around.The Great Barrier Reef was probably the most beautiful tropical sea he had ever seen, full of life, with a few small fish emerging from under the fine white sand and then scurrying away, but it was hard to say which rocks and which corals were camouflaged by highly poisonous fish.His uneasiness was evident as the siren grabbed his arm and motioned for him to swim towards the dense coral reef.The Great Barrier Reef was actually like a labyrinth, with huge leaf-like seaweed occasionally floating or falling in the middle of the coral reef that swirled like curved walls or pillars, and Xia Yi only felt dizzy, and if he swam back the way he came, he would definitely lose his way.There are no signposts on the seabed, and even if there is a particularly obvious and bizarre coral colony, you can see the landscape from the south, east, west, and west at the same time.The more I looked, the more uneasy Xia Yi became.There are many places where large fish can be avoided by ambushes, and they just need to wait for the opportunity to escape, which is absolutely impossible to prevent.Xia Yi you don't like the siren here feels bad, close to Xia Yi, but before he can say anything, the danger is really as Xia Yi thought, suddenly coming, they are turning a huge coral reef, Xia Yi saw the scene is not a colorful underwater scenery, but a huge open mouth, snow-white sharp teeth like triangular serrations.Xia Yi screamed out loud, but he was choked by the seawater, he desperately pulled the siren to swim back, the calm sea water was turbulent instantly, but it was still too late, the siren was facing Xia Yi, and he didn't see the situation behind him at all.However, seeing Xia Yi's expression and perceiving the changes in the surrounding water, the mermaid's purple eyes shrank suddenly.Xia Yi instantly heard a fierce sound wave that had no meaning, which shocked him dizzy, and his ability was out of control, and the whole person lay forward, just falling on the siren, because of fear, Xia Yi still barely opened his eyes to see the surroundings clearly.As a result, he saw a scene that he couldn't believe.The shark was good, this was really an adult tiger shark, eight meters long, its huge body turned on its side, its fins and body twitched strangely, and slowly floated towards the sea.Xia Yi, who was too frightened, forgot that he couldn't breathe, and he was still choking.The layer of water on his body collapsed as the ability went out of control, and the cold arm directly wrapped around his back, and then the warm lips, and there was no other movement after sticking it up.The temperature of the mermaid seems to be the same as the temperature of the sea all the time, and it is slightly warmer in the tropics, but it is still lower than the body temperature of summer.Choking and coughing slowly stopped, Xia Yi was still very unaccustomed to this kind of contact, although only his lips touched, subconsciously he felt that continuing like this was definitely not what he wanted to see, so he turned his head slightly to avoid it.It was dead looking at the shark's white belly, and Xia Yi still couldn't believe it.Infrasound can kill many creatures, including humans, just because of the difference in frequency.This is the mermaid's innate ability, the talent for sound, and the truth that the sea monster has no natural enemies in the vast ocean, otherwise it would have been attacked if it was lazily floating on the sea like Taomas, and its belly without the protection of the back armor would have been attacked, and the bigger and more ferocious creatures in the ocean, the safer it is, electric eels and sea snakes are deadly enough.The sirens didn't speak before that, but Xia Yi could see it.Obviously, it was not only the unlucky shark that died, but also many beautiful tropical fish, but they were small in size, stuck in the coral bushes and did not float, I don't know whether they were dead or alive, and it seemed that they were also lucky.The frequency of deadly infrasound waves of different creatures is not the same, this tiger shark is too large, under that kind of sound wave, a slightly smaller fish can't withstand this kind of impact, and it will die directly.Sea monsters don't have the slightest sense of ecology, and the reason why they don't use infrasound is simple.After killing all the food in the vicinity, what should I do if I don't have to eat it in the future Xia Yi vaguely remembered that when they encountered spider crabs, the sea monsters seemed to say that spider crabs were troublesome because they were not afraid of infrasound, and they were not naturally occurring populations at all.So what about the sea monsters, how do they come from gd1806102: