World Oceans DayPlanet Ocean: Tides Are ChangingPresentation / Assembly Grades 2 to 5Save hours of preparation time, simply download and go!Oceans are the lifeblood of Earth and humankind. Over two thirds of our planet is covered by seawater. Most of this water is found in five oceans, which are all connected. No matter how far from the shores we live, oceans affect our lives and the lives of our families, friends and communities. With every breath we take, every drop we drink, we are all connec