The changes and constants are highlighted, and the film attempts to show how fragile and unique Earth is.

[1] Blue Planet opens showing how the Apollo 11 Moon landing gives humanity a first whole and contemplative view of Earth.

The film first observes how living things depend on nature to thrive: for example, the unique anatomy of Lake Natron formed the lands of the Serengeti, cradle of a variety of animals.

Rain helps plants grow, making rainforests a big source of oxygen.

Water bodies, oxygen, and rainforests—notably the Amazon rainforest—have been greatly polluted by human activities like pouring harmful materials, mass-producing cars, and burning.