Marine Life Abiotic Factors
Marine life are adapted to regional abiotic factors and operate within a range of tolerance. And, what that really means is that marine life can live successfully within a certain water temperature range, a particular pH range, a particular salinity range, within a particular range of the light spectrum, and under certain pressure constraints, with enough dissolved oxygen and in the case of invertebrate (animals without a backbone) sometimes dissolved nutrients are a factor. 

Ocean Acidification and pH

Temperature and Climate Change

Nutrients and Eutrophication