Before we get started, the fact of the matter is: the ocean is blue, but not always. The Earth is a very vibrant place, filled with millions of different species of organisms, especially phytoplankton. Its house in the ocean, these small marine plants are crucial to the survival of many aquatic animals, being the base of the "marine food chain." Their importance doesn't stop there. In fact, these plants account globally for about half of the "net photosynthesis on Earth," and plays a big role in carbon's cycle, transferring carbon from the atmosphere to the ocean. When phytoplankton grow, they grow in huge numbers, blooming across hundreds of miles of ocean, discoloring the ocean into shades and hues of blue and green. Down below on Earth, we can't quite see this amazing view of discoloration in the ocean. Its full beauty can only be seen from the space. This is just another reason why space is a very magical, amazing place.