Meaning of the word "little drops of water make a mighty ocean" in English

What does "little drops of water make a mighty ocean" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

little drops of water make a mighty ocean

US /ˈlɪt.əl drɑːps ʌv ˈwɔː.tər meɪk ə ˈmaɪ.ti ˈoʊ.ʃən/
UK /ˈlɪt.əl drɒps ɒv ˈwɔː.tər meɪk ə ˈmaɪ.ti ˈəʊ.ʃən/
"little drops of water make a mighty ocean" picture

Idiom

small, seemingly insignificant actions or things can eventually add up to something very large or important

Example:
Don't underestimate small savings; little drops of water make a mighty ocean.
He started with one volunteer, but soon had a hundred, proving that little drops of water make a mighty ocean.