Some say all lfe is aquatic explain what they mean?

The phrase "all life is aquatic" suggests that life originated in water, as the earliest forms of life—such as single-celled organisms—developed in marine environments. Water is essential for biological processes, serving as a solvent, medium for chemical reactions, and habitat for countless species. Even terrestrial organisms rely on aquatic systems for hydration and nutrient cycles, highlighting the fundamental connection between life and water. Thus, the statement emphasizes the primacy of aquatic environments in the evolution and sustenance of life on Earth.