Con-ver-sa-tion- noun a talk , especially an informal one, between tow or mor people, in which news and ideas are exchanged.   Human use of the world’s resources has never been greater.  Understanding what we need as a species and what the world’s oceans, lakes and rivers can provide, is essential for both to survive.   To understand what is needed, we need to communicate with each other, and come together to take action for sustainability and practical use.