We did about science for our next badge at cub scouts on Tuesday. I started to discuss this with our leader and it turns out the process I was describing was about something called Haloclines!
So what is this? Well basically between the normal water and the top brine is a short (1.5 metres) zone which is called a halocline basically.
So I have researched this and found…
The salt in the sea rises sharply there, and oxygen reduces towards zero. This halocline between the seawater above and the brine below has many bacterial and cells. These are called chemoautotrophs, which feed on ammonia from the brine but cannot function without some oxygen. Certain methane oxidizers and haloarchaea are found only in the halocline.