I asked the question metaphorically and the boundary of ocean mentioned in question has a metaphorical use specially here. So, in order to answer the question first of all a answer maker should have knowledge about metaphorical use of language. In my question the unlimited boundary of ocean tried to say the unlimited benefits of tea.
For example : A swift moving bird from the metaphorical point of view refers to a beautiful girl.
At first I could see no connection in the two - but I have to admit that drinking tea and walking by the sea (ocean) are two things I find relaxing. I am lucky in that I live near to the coast and can walk along the beach all the year round.
Tea is my weakness, organic tea with goats milk or peppermint tea are my favourites, sometimes fruit teas. But each day and at times of crisis it is traditional English tea that I drink.
I think it is not important whether a cup of tea contains herbal ocean or not, but you should first to make you in a beter health condition to adsorb it. Moreover, diffrent sorts of herbal tea should be applied according to the seasons, as I would like to prefer green tea at spring, chrysanthemum tea at summer, and wolfberry tea in autumn and winter. If you want to try wolfberry tea, please note that you shall not put so much wolfberries in the tea for it would lead to toothache, which is my experience, only 5-6 wolfberries is ok.