The Snapper is a cunning predator that disappears like a bullet when sensing danger. The eel is a globetrotter, sinuously moving between fresh and salt water. Cuttlefish, also predators, with the incredible ability of camouflage; blending into rocks or disappearing into sand, and deceiving predators and prey with clouds of dense black ink.
Below, two molluscs move slowly on a rock.
While diving, you may, by chance, see a similar scene, lasting, perhaps, only a brief moment; then, suddenly, it has disappeared before your very eyes.