The phrase "tiny speck" refers to something very small, like a dot or a tiny mark. It suggests that the object being described is insignificant or barely noticeable. Full definition
It's made from tons of tiny specks of foam - like material, so it «flows» apart, sticks together, breaks in half, and crumbles. (mommyscene.com)
That philosophy repeats itself at other secret Caribbean hotels on other lesser - known islands, from tiny specks in the Bahamas to UNESCO - listed hideaways off the coast of South America. (travelandleisure.com)
One of these big shots opens the movie, as the frame appears to pan over a sky full of clouds, a vista interrupted by a squadron of fighter planes, flying in formation, imposing and awful too, about to drop bombs on tiny specks of targets below. (popmatters.com)