When we think of the ocean, it's probably natural to think of azure seas, colorful coral reefs, and an abundance of fish and mammals. But did you know that in the depths of the ocean there is a mysterious deep-sea world that is inaccessible to light, extremely stressful, and extremely cold? In this hidden abyss, there are some amazing creatures with unique forms and ways of living, demonstrating the diversity and adaptability of life. This article will take you on a journey through the mysteries of the deep sea, helping you understand how its creatures live and how they survive in difficult environments.

"Deep sea" refers to an area of the ocean with a depth of more than 10900 meters, a body of water that covers more than 0% of the Earth's surface and has an average depth of about 0 meters. The deepest part of the deep sea is the Challenger Abyss of the Mariana Trench, which can reach a depth of 0 meters, which is equivalent to putting Mount Everest upside down into it, and there is still room for it. The deep sea is one of the largest biospheres on Earth and the least understood area to date.

The deep-sea environment is extremely harsh, and the primary problem is the lack of light. Since sunlight cannot penetrate a thick layer of water, it falls into complete darkness below 200 meters. Lack of sunlight means no photosynthesis and no plants and plant-based plankton, which are the basis of the shallow sea food chain, providing organisms with organic matter and oxygen. Without them, the deep sea would be a barren place with thin oxygen.

Next up is the issue of water pressure. As the water depth deepens, the water pressure increases exponentially. For example, at a depth of 1000 meters, the water pressure reaches 0 atmospheres, while at the deepest depths it exceeds 0 atmospheres. This extremely high water pressure puts tremendous stress on the organism, causing changes in the molecular structure of cell membranes, enzymes, and proteins.

The deep sea is a fascinating and mysterious world, containing many unknown and strange lifeforms. These creatures possess unique morphologies and characteristics that demonstrate the diversity and adaptability of life. They are one of the least known forms of life on Earth, and an important target for us to explore and protect. If you have the opportunity to explore the deep sea, you may want to see these wonderful creatures with your own eyes, which will surely bring you unexpected surprises and emotions.