Giant Fish Survival: I Can Hear the Giant Fish's Heart

On the 23rd day, Zhou Wen didn't sleep all night. In one night, he made a device that could be used to float. The device was very simple, made of wood and hemostatic bandages.

Zhou Wen used an algae-generating tank to acquire a [Leviathan Wood Carving Blueprint] through the World Communication Channel.

This Leviathan wood carving is three meters long, solid, and requires 150 units of wood to make. It has strong buoyancy in water.

Next, intertwine a large number of hemostatic bandages together and roll them into a rope shape to increase the tensile strength of the hemostatic bandages. Then, use the hemostatic bandages to make a rope to weave a large net with a side length of four meters.

Finally, four 5-meter-long hemp ropes were attached to the four corners of the net and tied together in the middle, resembling an inverted parachute.

After binding them together, the remaining 2.5 meters of the four ropes were used to tie the other end of the rope to the tail shaft of the Leviathan wood carving, thus completing the levitation device.

In one night, Zhou Wen made two, so that if one buoyancy device malfunctioned, there would be a spare.

The next step was to test whether the two buoyancy devices could be used properly. The esophagus of the Transformed Leviathan was too small to bring the two devices out. Zhou Wen sent the information to Jiang Haitao through the World System.

After leaving the Leviathan, Jiang Haitao had already sent over two buoyancy devices. Zhou Wen took them all out and let them float on the sea. Then, he placed stone blocks in the net of one of the devices.

Each stone block weighs 500 jin (approximately 250 catties), and Zhou Wen placed three of them in total. Then, he put on the armor of the yellowtail with knife fins and scales, and with his own weight, the total weight inside the net reached about 800 jin (approximately 400 catties).

The weight of 2300 jin (approximately 1600 catties) was clearly more than the buoyancy of the four wooden carvings, and the entire device began to sink, with the four hemp ropes connecting the wooden carvings taut and straight.

The device descended to the bottom of the crimson kelp forest, reaching a depth of over 100 meters. With a thought, Zhou Wen sent the three stone blocks in the net to Jiang Haitao through the world system.

The weight inside the net suddenly dropped from 2300 jin to 800 jin. The buoyancy of the four wooden carvings was greater than 800 jin, so they slowly floated up with Zhou Wen in tow.

Throughout the entire experiment, Zhou Wen remained completely still while wearing the armored scales of the yellowtail with its sharp fins, and the buoyancy device achieved the desired effect for him.

However, Zhou Wen felt that the ascent speed was a bit too slow, so he added a wooden carving to the ascent device, making a total of five wooden carvings. He tested it again, and the ascent speed was much faster than the first time.

After successfully using the first buoyancy device, Zhou Wen also tried the second one. After confirming that there were no problems, he sent both devices to Jiang Haitao.

Zhou Wen did not immediately enter the crevice; he needed to make further preparations.

Yesterday, while searching for the red root nodules, we needed Jiang Haitao to bring us mineral water bottles filled with air to provide oxygen to our bodies. Today, the red root nodules we're searching for are deeper, and relying on the air in the empty mineral water bottles will definitely not be enough.

Because of the pressure of the seawater on his body, at a height of 200 meters, Zhou Wen was unable to inhale the air from the mineral water into his lungs. Therefore, he needed to inhale air at a higher position, but the oxygen content in the air was very low and could not sustain his body's needs for a long time.

Therefore, it would be best to fill the mineral water bottle with either oxygen or carbon dioxide, and Zhou Wen chose carbon dioxide.

Actually, it would be better to store oxygen, because some of the oxygen can be stored in one's own blood, but Zhou Wen had no way to collect oxygen, so he could only settle for storing carbon dioxide.

The method for collecting carbon dioxide is simple: just place a fire inside the stomach wall, then prop up a flattened mineral water bottle, and the carbon dioxide will naturally enter the bottle.

Of course, there must be other gases in the bottle, but they are definitely much stronger than air.

Send these bottles filled with carbon dioxide to Jiang Haitao as well, and he can send them to him via private message when he needs them.

With everything ready, Zhou Wen transformed into Leviathan and sent himself to the only crevice where the Crimson Root had not yet been harvested. He had already explored the crevice yesterday and memorized the route to the Crimson Root.

Without needing the Crimson Long-nosed Fish to lead the way, Zhou Wen followed the route in his mind and quickly arrived at a huge space. There was an exceptionally thick red root system there, larger than any of the others.

Yesterday, Zhou Wen swam around this root system, which is about 30 meters in diameter and twice as thick as the other root systems. This is why the scarlet root nodules here are located deeper.

At this point, Zhou Wen will start using the buoyancy device. He asked Jiang Haitao to send him one. When the buoyancy device first appears in the water, it is very messy and needs to be tidied up. There are rocks above that will prevent the wooden carving from rising, but there is no need to worry that the buoyancy device will just drift away.

After tidying up, Zhou Wen made three stone blocks and placed them in the net below, and the entire buoyancy device began to slowly sink.

Zhou Wen did not put on the yellowtail scale armor for the time being. Instead, he asked Jiang Haitao to send over a bottle of carbon dioxide mineral water. He began to descend while absorbing carbon dioxide and exhaling excess waste gas.

When the depth reached approximately 180 meters, the carbon dioxide had been mostly absorbed. The person placed a seaweed bag containing boiling blood coral powder in their mouth, and with a thought, put on the yellow ribbonfish scale armor with bladed fins. The increased weight accelerated the device's descent.

The depth quickly dropped to below 200 meters, and Zhou Wen felt the scales of the yellowtail with its sharp fins tighten up a bit, but it didn't affect his body much.

Zhou Wen turned his head and used his headlamp to observe. It was pitch black all around, and he could only see the thick, crimson roots beside him.

"Huh~."

Suddenly, the calm seawater surged violently, and the buoyancy device was shaken violently by the surging water.

"Something's there!" Just before the seawater surged, Zhou Wen clearly felt something swim past him, which then caused the seawater to flow.

Zhou Wen couldn't see what it was, but it was definitely quite large. Not daring to delay, he sent the three stone blocks directly to Jiang Haitao. Without the stone blocks to hold it in place, the device began to rise rapidly.

"Huh~."

There was another sound of flowing seawater, this time even closer, almost touching Zhou Wen's face. This time, the headlamp's light illuminated a huge black body, and the crystalline scales on the black body reflected a glossy sheen under the headlamp's light.

At this moment, Zhou Wen's heart was in his throat. He only hoped that the device would rise to more than 200 meters as soon as possible. If it was caught by this huge creature below 200 meters, he would be finished.

"Huh~."

The giant creature kept swimming around Zhou Wen. Suddenly, a huge eye appeared in front of Zhou Wen, and his headlamp shone directly on the eye. The giant eye seemed to be frightened, and it instantly turned red and emitted a flame-like red light.

Immediately afterwards, red light gradually spread in the pitch-black space, like a burning flame, illuminating the black scales and quickly outlining a giant creature 40 meters long.