Pollution in simpler words is any activity that can result in harmful consequences or can cause disruption in the normal environmental conditions. Whether it is addition of undesirable substance or removal of desirable ones, harmful substances are getting accumulated in either way. Also change in temperature of water bodies can also adversely affects the plants growing in the bodies and indirectly affecting the animal life and disrupting the food chain. However pressure in the water bodies varies naturally as me moves more closer towards the base of sea, so it doesn’t affect the conditions much.