In our country and even the whole world, whether it is the exploration of space or the exploration of the ocean, your biological exploration has always maintained a very strict attitude. From ancient times to the present, everyone is full of interest in these mysterious underwater worlds and curiosity about these unknowns. We all know that we live in amniotic fluid during the process of gestation, but after we are born, if we don't learn the skill of swimming, then when we enter the water, we can't stay in the water for a long time, which may cause breathing difficulties and even drowning. Especially those oceans, the larger their area and the deeper their depth, will have a great impact on our human body. Therefore, it is a very arduous task for us humans to dive into the underwater world to explore.

But with the appearance of various instruments in modern science, people can only hold their breath in the water for two or three minutes from the beginning, and now it is practical. Some instruments supplied, diving tools or masks provide oxygen, so we can use these instruments to stay in the underwater world for a long time, and besides, we have invented some larger instruments, or, well, explore the underwater world for a long time, similar to large-scale engineering projects. It is very influential for both biological monitoring and acoustic monitoring.

In the ocean, we all know that from the appearance, the whole sea water may turn blue or light green, which makes people feel clear and transparent, but in fact, the underwater world is a colorful world. For example, in the underwater world, we can see some zebrafish, all kinds of lobsters, many green plants, such as algae, and some corals with different colors. In addition, there are many fish or jellyfish in the underwater world. In elementary school, maybe the teacher said the most, and the important creature is jellyfish, so some jellyfish may be longer than blue whales. Although he has many similarities with this creature with some corals, the biggest difference is that jellyfish belongs to an independent life, and it also survives through genetic evolution.

Jellyfish, its main component is water, with high water content. When it contains different water content, it may take on different forms, that is, different jellyfish have different forms, so some jellyfish may change color and glow in water. For example, some small jellyfish will show a faint light green or lavender light in the water, and some will exist like rainbows. Then if they gather and flow in the sea, it is possible to see more obvious colored spheres.