The Ocean Planet: Earth’s Blue Heart
Did you know every second breath you take comes from the ocean? This vast, blue expanse shapes our climate, fuels the water cycle, and holds the planet’s greatest extremes—from sunlit shallows to deep-sea trenches. Let’s break it down and explore Earth’s blue heart.
Lesson 2: How Did the Ocean Form, and Why is it Salty?
Earth’s oceans formed over billions of years through volcanic steam and water-rich asteroids. Seawater’s saltiness comes from rivers carrying dissolved minerals like sodium and chloride....
Lesson 1: Why the Ocean Matters
The ocean covers 71% of our planet and is essential to life on Earth. It produces oxygen, regulates climate, absorbs carbon, supports biodiversity, provides food...
ADD RELATED TOPICS: Take your learning further – explore these next!!
Where to next?
Keep exploring marine science or discover more ways to be part of the movement.
