The Lewis Chessmen, diminutive sculptures each with a comic expression, are probably most famous for their appearance in a scene from "Harry Potter and the Sorcerer's Stone."
The sailing stones of the Racetrack Playa in Death Valley California leave mysterious trails zig-zagging behind them, a phenomenon carefully scrutinized.
Synanceia, the vernacular being stonefish, camouflages itself in a grey, mottled color like a stone, and like a stone it rests at the bottom of a reef, until its prey gets too close.