Oceans are of extreme usefulness to humans: they provide the rain. Rain creates lakes and rivers. Life would be difficult without this cleverly desalinated water. read more
Sea and ocean water is unfit for bathing and washing purposes also as soaps are unable to produce lather and hence works ineffectively in saline water. Ocean water is an important resource as it is responsible for climate changes. Ocean water is also a source of food and valuable minerals. Ocean water also helps in maintaining water cycle. read more
Answer to the first question - Ocean water is abundant in supply, but it is not fit for use. It can be filtered and used, but if worldwide consumption starts taking place, it can result in a large number of expenses, as it is not as easy to filter it like lake or ground water. read more