Earthlings presents an exploration of human and animal life through imagery that captures shared environments and existential intersections. The photographs emphasize the physical and emotional connections between species, drawing attention to coexistence and vulnerability within natural and constructed spaces.

The book uses a contemplative visual approach that juxtaposes various species, highlighting moments of tension and harmony. Its 192 pages allow for an extensive meditation on the subject of earthly existence, portraying scenes that evoke empathy and reflection on the conditions of life.