A 2-meter-long blue-backed white-bellied shark!

At the first sight of the shark, both of them couldn't help but feel nervous, and Yan Ran was so frightened that he quickly swam over and grabbed Mordin's wrist tightly.

It's a dangerous move!

Mordin made an "OK" movement with his hand, and Yan Ran immediately realized his mistake and quickly let go of his hand. The shark swam up against the two of them, and deliberately pressed the top of their heads with its big white belly, and swam away with its tail.

Hans didn't point out the mistake Yan Ran had just made, and the two young men were calm enough for this kind of sudden situation, and they couldn't be too harsh on them.

After a day of training, the two finally passed Hans's rigorous test, which originally required at least 50 hours of training, which was compressed into 20 hours, and Hans awarded Mordin and Yan Ran the Closed Water Deep Diving Qualification Certificate.

Finally able to go out to sea to dive, the two excitedly high-fived and celebrated.

Five days later, on the weekend, at 7 p.m., Mordin and Yan Ran finally set foot on the yacht that went out to sea.

This is a mid-size sport yacht, 51 feet long and 17 feet wide, with a very spacious main deck that serves as the main relaxation area. There are 2 decks on the deck, and there is a sub-deck on the top of the cabin, which can accommodate 3 people to lie on it and blow the sea breeze and open the view.

The whole yacht is designed in a flowing water type, and the wind and water resistance can be reduced to a minimum when driving at high speeds, and the maximum speed can reach 50 knots.

The biggest problem with going to sea on small and medium-sized ships is comfort and safety. Due to the sea breeze and waves, the hull of the ship sways up and down in the wind and waves, leaving the world spinning for those who are going to sea for the first time. But the yacht is equipped with a gyroscopic anti-sway device, which uses the momentum of the gyroscope to counteract the force of the wind and waves, reducing the sway of the hull by 70%, and greatly increasing the comfort, at least Mordin, who is on a boat for the first time, did not feel seasick.

The yacht drove slowly along the strait, sailed out of the bay after half an hour, and sailed north at increased speed, their destination this time was Pingtan Island in Putian City, about 200 kilometers away from Xiamen Island, the yacht traveled along the coastline at a speed of 30 knots, and it is expected to reach the waters of Pingtan Island at about 12 o'clock in the middle of the night.

Mordin was lying on the sofa chair on the front deck, the sea breeze in October was already a little cool, although he had put on autumn clothes, but on the high-speed yacht, the sea breeze at night was blowing, and he already felt cold, Mordin saw Yan Ran lying on the side also holding his hands on his chest to resist the cool breeze, so he pressed the button on one side of the chair, and the glass guardrails on the side of the boat on the left and right sides slowly rose, blocking most of the oncoming sea breeze, and the two suddenly felt a lot warmer.

The foredeck of this yacht has a set of glass shells that can be raised and lowered, and when fully raised, the glass shells are connected to the 2 levels of cabins in the middle to form an airtight glass cabin, even in windy and rainy weather, people stay above the foredeck without being affected in the slightest.

The yacht is operated by two professionals, who are also sailing enthusiasts, who hold both a yacht driver's license and a diving instructor and professional rescue certificate, who take turns driving the yacht during the trip, and when they arrive at the predetermined sea area, they also serve as diving ambulances or instructors.

Qin Haiyang also holds an A1E driver's license, but at this time he and the other 5 team members are sleeping in the cabin below, because they are going to do night dives in the second half of the night, so they must rest well and nourish their spirits first, so as not to have an accident due to fatigue at that time.

Mordin and Yan Ran are not qualified to dive at night, and their role at that time is to be a member of the platform pick-up team, which is to start, and they don't need to make much effort, so the two of them don't plan to go to bed too early.

The weather was fine tonight, the wind was not strong, the sea was very calm, and thanks to the latest shock absorbers, the yacht was able to travel at a high speed of 30 knots with minimal bumps on the deck.

There is not a glimmer of light on the sea, and the distant coastline seems to be on the other side of the skyline, with only faint silhouettes visible.

Mordin looked up at the sky.

The sky was pitch black, and the moon did not appear.

The sky is full of stars like clouds, clusters and clusters, as if they are close in front of you and within reach.

"Will I be able to go to those distant stars in the future?" Perhaps everyone has this kind of dream in their hearts when they are young, Mordin has been full of fantasies about the vast universe since he was a child, as if in the depths of the galaxy, there are many mysterious friends living in them, waiting for him to pilot a spaceship to visit.

Mordin stared at the starry sky like this, and after a while, he found that Yan Ran hadn't spoken to him for a long time, and when he turned his head, Yan Ran had fallen asleep, he picked up the blanket on the side and gently covered it for her.

Yan Ran is peaceful and beautiful in her sleep, her long eyelashes are like willow branches on the embankment, her forehead is dancing delicately in the breeze, her delicate jade nose is slightly moving, and the corners of her slender mouth are smiling.

"Don't look at it!" Mordin remembered his master's warning, quickly withdrew his charming gaze, and lay back on his sofa.

At midnight, the yacht sounded three flutes and the destination arrived.

The boat slowly stopped, and Yan Ran also woke up at this time. Mordin quickly pressed the button to lower the glass fence, put away the sofa recliners, and waited for the six team members in the cabin to come out.

After a while, the lights on the ship turned on, the hatch opened, and Qin Haiyang and the others wore diving suits and walked onto the deck with their equipment. They checked their equipment, then helped each other put on their equipment, and coach Hans checked them one by one. Seeing that the preparations were completed, Qin Haiyang took out the locator in the equipment bag, checked the current position with the team members, and agreed on the route of advance and return, and said: "I wish you all good luck tonight, you can shoot a school of fluorescent fish!" After speaking, he jumped into the water with Lin Juan.

Immediately afterwards, Mei Qing and Xu Zhicheng also went into the water, leaving the last pair of Wang Xian and Bai Na. Wang Xian went into the water first, but Bai Na suddenly took off the breathing apparatus and said to Mo Ding: "Brother Mo, will you join me tomorrow night?" She operated Chinese that was not very proficient: "I feel that there will definitely be no gain tonight, only with you will have good luck." Mordin was stunned for a moment, and Yan Ran was eating and laughing on the side.

Hans hurriedly urged, "Hurry up!" Then she turned and jumped into the dark waters.

The fluorescent fish that Qin Haiyang mentioned just now was the target of their diving here this time.

As early as the end of August this year, a certain country's fishery resources satellite took a set of strange photos in the waters east of China at night, on which many mysterious blue light clusters appeared, which were identified by experts and determined to be sent by some kind of fish. The photos were posted online and immediately attracted a lot of attention.

The fluorescent fish school is being discovered for the first time, and it is supposed to be a new fish species. Marine experts from various countries and some non-governmental exploration organizations have come to the waters to investigate, and Qin Haiyang's team has also been here in the past two weeks, but they have found nothing.

This sea area is about 50 nautical miles away from Pingtan Island, which is the area where blue light clusters frequently appear in the photo, Qin Haiyang They were divided into 3 groups, respectively, to search the sea area within a radius of 20 nautical miles, diving depth within 50 meters, planned to take 3 hours, about 4 o'clock in the morning.

The sea area around Pingtan Island is not deep, with an average of about 50 meters, but its marine landform is very complex, with sea trenches crisscrossing and dense submarine reefs, which is a typical sea erosion landform. It has been studied that the composition of this seabed is mainly volcanic rock, and the surface is covered with a thick layer of volcanic ash sediment.

In recent years, due to the continuous improvement of the marine environment and the abundant nutrients of the thick volcanic ash sediments, the algae plants on the seabed have revived, especially the giant algae plants, which are very luxuriant.

The abundant plant resources attract a large number of marine organisms to thrive here, and there are many kinds of fish and shellfish that feed on seaweed and microorganisms, and the fishery resources are very rich. Large predators such as seals and sharks also hunt here, while the dense seagrass and complex terrain of the seafloor provide natural shelters for small fish to escape and hunt, forage and be hunted.

Therefore, the diving environment here is very complicated, but it is precisely this difficult diving environment that has triggered Qin Haiyang, who likes to be adventurous and has a certain strength of his own, to challenge.

So as soon as those strange photos were released, several teams of Zheng He's Sailing Club set the waters of Pingtan Island as the focus of this year's activities. Qin Haiyang's team was the first to arrive, and the other two teams will also arrive one after another after being fully prepared.

For this expedition dive, they have made careful preparations, equipped with the most advanced diving equipment, such as helmet-mounted sonar scanners, geomagnetic navigators, helium-oxygen mixed high-pressure gas cylinders with a gas supply time of up to 4 hours, intensive anti-entanglement buoyancy adjustment devices, high-performance power batteries, etc., and are also specially equipped with emergency distress signal flares, etc., which can be described as foolproof and have a very high safety factor.

After the team members were launched, Hans returned to the cockpit, started the yacht and began to launch suspended sonar transceivers in the predetermined waters, which were connected with the yacht by radio on the surface of the water, and communicated with the diving team members through the underwater acoustic communication system underwater, so as to control the position and status of the team members at any time, and once a team member was in danger, they could be rescued at the first time.

Half an hour later, after the suspension sonar unit was launched, the yacht slowed down and cruised back and forth in the predetermined waters, waiting for the crew to return.

It was quiet again, except for the sound of the waves gently lapping on the bow of the boat, and the occasional sound or two of sea animals splashing in the water.

After the initial excitement had passed, the wait was boring, Mordin and Yan Ran were already yawning, and at Hans's suggestion, they took turns going back to the bottom to rest, leaving only one person to accompany Hans, watching the monotonous monitoring screen. As the minutes ticked by, Mordin held back his sleepiness, yawned, and chatted with Hans in a non-standard pronunciation.

Finally, at 4 o'clock, several blue spots of light appeared on the sea, which Mordin judged to be night dive indicators installed on the dive crew's gas cylinders. Sure enough, after a while, the members of Qin Haiyang and Mei Qing's two groups climbed the ladder and boarded the boat. Judging from their expressions, there was nothing to gain tonight, and the four of them unloaded their equipment, dragged their tired legs, and went to the warehouse to take a shower and sleep.

But Wang Xian and Bai Na didn't appear for a long time, and there was no response in the pager. Half an hour passed, and the two still did not appear, Hans was anxious and woke up Qin Haiyang, who had just fallen asleep.

However, in the vast night sea, where to find the traces of the two?