Although Tang Hai said that he was not afraid, his muscles were tense now, and only he knew what to do......

His eyes kept staring at the big bamboo raft, Tang Hai had already planned it, if there was really anything wrong, he would directly fly sand and rocks with one move...... It's about smashing things and running away.

As a result, there was nothing left on the big bamboo raft!

"Whoa, no light of life? Also, how can ghosts have the light of life. Wait, no, I'm a pioneer in science popularization, how can I think there are ghosts in the world! Something must be wrong! ”

Tang Hai's eyes moved around, and finally, he saw something that was about 20 meters away and stayed quietly, as if he was peeking at him.

Tang Hai could see the size of the living form from the light, so as to judge what kind of creature it was, and when he saw that it was this little guy who was doing tricks, he couldn't help but feel funny......

picked up a round stone casually, and Tang Hai threw it casually!

Thump!

The stone fell on top of the little one's head!

"Come out, I see you!" Tang Hai shouted!

He didn't expect the other party to understand, but this time, he got a response!

A three-meter-long aquatic creature leaped up from the water and made a beautiful arc in the air, with a bright moon in the sky in the background!

The round body, the fat layer on the forehead is protruding, and the beak has a big arc, as if it is showing a smiling face!

Dolphin!

Tang Hai happens to know this dolphin, this is the Pacific bottlenose dolphin!

Seeing that Tang Hai had discovered himself, the little guy was so happy that he let out a 'wow' cry, and then jumped several times in a row!

……

Dolphins, the only ones on earth in intelligence after humans, surpass gorillas, and they will also use simple tools!

Adult female Pacific bottlenose dolphins are about 2.1 meters long and can weigh up to 200 kilograms, while males can be up to 3 meters long and weigh 350 kilograms!

The average life expectancy of females is about 70 years old before they die naturally, while males are generally only about 50......

That's right, they have a great ability to think!

Each of them has its own name, and if you observe the group, you will find that they can call a companion in a targeted way! And their intelligence can tell the difference between 'bring that person' and 'bring that person to skateboard'!

This is a large carnivore that has no natural predators except for some sharks! And they like to move in groups, if they are too large in a group and are attacked by one or two sharks, they will even take the initiative to attack the sharks by impact, and the win rate is very high!

What amazed Tang Hai the most was not their IQ or lifespan, but their sleep patterns!

They can sleep with the left half of their brain for half a day and then switch to the right half of their brain......

Unless they are attacked by powerful predators, they sleep almost all day long, and even when they are active, they must have one side of their brain sleeping! This is the real god of sleep!

And their way of finding food is also very peculiar, it is sound wave detection, the effect is stronger than ordinary fish, fish finder, as long as it is an active aquatic creature, such as small fish or squid, it is their favorite food!

Tang Hai has also heard that powerful adult dolphins can use sound waves to attack!

This is a group of happy water spirits who not only have fun on their own, but sometimes play with others......

Tang Hai finally understood why the big bamboo raft would come back on its own, because dolphins like to 'top things' to play, floating planks, aquatic plants, they often do this! There are also people who train dolphins to play with the top ball!

……

Tang Hai was a little puzzled, dolphins generally like group activities, this is a kind of creature that is very attached to friends, if one of the dolphins in the group is seriously injured and died, they will not exclude the injured from the group like other aquatic creatures, but will always stay by its side.

This dolphin is obviously lonely, and there is a story of the ghost ship, it has not been lone for a day or two, why?

When he saw the bamboo raft floating on the water, Tang Hai suddenly understood something.

The dolphin must have been waiting for its partner, but it didn't know that its partner would never come again......

……

Maybe no one has played with it for too long, so it has been trying to play with humans in its own way, but unfortunately its thinking mode is still different from that of humans after all, and it is estimated that there will be some people here who will come, but they are all scared away by it.

This speculation made Tang Hai cry and laugh.

Out of his love for dolphins, Tang Hai reached out and fished in the water, creating a whirlpool. This is out of his territory, and he no longer has that invincible ability under water, but he can still stir up the sea water to make 'fodder'.

Tang Hai's feed has a fatal attraction to aquatic creatures, and in just a minute or two, some small newborn sea melon seeds and small shrimp come over, all of which are half-finger-long creatures.

Another minute passed, and then a tentacle suddenly stretched out, caught the stirred shrimp, and stuffed it into its mouth, it was the little octopus!

Then a pot-bellied white sea bass appeared, and the target was this squid!

The distinction is very simple, mainly look at the tail fin.

The sea bass is delicious, think of Fan Zhongyan who is so simple, honest, patriotic, and loves the people, and also wrote "People come and go on the river, but they love the beauty of sea bass".

There are about 400 species of sea bass, distributed in all seas, and the grouper that people generally like is also the perch species, but the sea bass is generally very active, and the grouper is one of the rare ones that does not like to move.

Tang Hai stirred the sea water like this, and saw a school of fish gathering, at first the big dolphin was surprised, but after seeing the sea bass appear, it became restless, obviously a foodie who can eat!

Tang Hai's eyes were quick, and he suddenly spread his hands, grabbed a fat fish of about three catties, and threw it towards the big dolphin from a distance! The latter shouted, jumped up again, and actually caught it in the air!

Seeing that the big dolphins were eating happily, and even a little eager to eat what was left here, Tang Hai grinned and stood up......

This giant dolphin should have undergone special training, and the moment Tang Hai jumped into the sea, it was obviously alert! But looking at Tang Hai's vigorous diving, it is not to trouble it, it is happy to chase the various fish that have been stirred just now!

Dolphins' echolocation ability is excellent, not to mention that they also have top night vision, deep-sea vision, don't look at their usual stupidity, swimming speed is 10 kilometers per hour, once they break out, the maximum speed can easily break 70 kilometers per hour, faster than cheetahs running at full speed in the plains!

In just three to five minutes, the twenty or so fish of all kinds that were slightly larger were all caught by it, and none of them escaped in any direction! The 350-kilogram big guy is different, I'm afraid that one meal is more than ten meals for the big pike!

……

The reason why Tang Hai went to the sea was certainly not to play with the dolphins.

However, the big dolphin obviously didn't think so, and in just a few moments, Tang Hai had already been knocked over by it seven or eight times in the water!

……

Tonight, there is a third watch, friends who don't go to bed early help me log in after 00 o'clock and click to vote!