Deep Ocean Essay

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The deep ocean is considered an extreme environment because of the low temperatures, high pressures, lack of oxygen and no sunlight. These conditions have caused the organisms which live there to evolve, often through unusual and unique adaptations, so they can live, reproduce, and thrive. An extreme environment is a place where humans normally do not live or could die there. There are organisms caused extremophiles that live there and are so well-adapted that they readily grow and multiply in order to survive. An example of an extremophile which lives in the deep ocean is the Anglerfish. It lives in the bottom three depth zones of the sea. The ocean is separated into five depth zones, the Euphotic zone, the Mesopelagic zone, the Bathypelagic …show more content…
This means that the maximum pressure may reach up to 1100atm. 1atm stands for one atmosphere and is used as a unit of pressure. 1atm is also equal to 101325Pa, the more common unit of pressure. Submersibles, small vehicles designed to operate underwater, have a thick titanium pressure sphere. This is because the immense pressure at depths below 2,000m can crush air spaces within humans, killing them instantly. The titanium pressure sphere ensures that the tons of pressure do not crush the submersible in the deep ocean. Another problem that the organisms face in the deep ocean is maintaining their neutral buoyancy. Neutral buoyancy is basically when organisms maintain their depth in the ocean without floating upwards or sinking. In order to achieve this, many organisms have changed the shape of their bodies, or have developed a swim bladder to maintain neutral buoyancy. A swim bladder is a network of blood vessels called rete inside a gas sac which stores gases and regulates the usage of the …show more content…
This means that bioluminescence is the only source of light, which affects the vision of the organisms that live in the deep ocean. Because it is harder, if not impossible, to see in the deep ocean, it is a lot more difficult to find mates, avoid predators, and find food. To survive, many organisms have changed their colour over time to blend in with the darkness to avoid predators, or developed bioluminescence to find prey and for defence. Some organisms may even have developed larger eyes or feelers to increase their sensitivity.

Due to the lack of sunlight, photosynthesis becomes impossible. Without photosynthesis, there cannot be any plants as they need to photosynthesize in order to survive. Without plants, food is a lot scarcer in the deep ocean than in the zones above and there is less energy available. This is why organisms have adapted to conserve energy, adapted to eat anything that comes their way, or eat organic material that falls from

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