3 things to keep in mind

1. Turn off the light

Most areas of the oceans are very deep. There are two definitions of deep sea. 1) At depths where light can no longer reach, the deep sea begins. Depending on the quantity of small-suspended substances, light can maximally penetrate into a depth of 1000 meters. At greater depths it is pitch dark. 2) Another definition is when light is not enough for photosynthesis to happen. This is in about 200 meters. No matter what definition – the deep sea is the largest habitat on Earth.

2. Dress warm

The predominant part of these water masses is very cold, just 2° Celsius (35,6 ° Fahrenheit). Only the Mediterranean Sea and the Red Sea stay warm up to depth of 2000 meters.

3. The pressure increases and increases

Because of the weight of the overlaying water, there is high pressure present in the depths of the oceans. At sea level we have a pressure of 1 bar. The pressure in the water increases for 1 bar per 10 meters depth. While gases get compressed, liquids and solids stay practically the same size. An example: A gas filled balloon shrinks to half of its size in 10 meters water depth. In 20 meters it has just a quarter of its volume. What do you think? How will it look in 1000 meters?