Predation provides energy to prolong the life and promote the reproduction of the organism that does the killing, the predator, to the detriment of the organism being consumed, the prey.

In this system, nonlethal predator effects predominate ... Habitat complexity disrupts predator-prey interactions but not the trophic cascade on oyster reefs. Ecology 85, 995-1004 (2004).

Predator-prey cycles show the natural rise and fall of numbers of predators and prey over time. All organisms in a food web depend upon each other and changes to one can affect the others.

Cuttlefish aren’t just masters of disguise – they're illusionists of the sea. Researchers discovered that broadclub cuttlefish use a dazzling display of downward-moving stripes on their skin to sneak ...

While sneaking up on prey, cuttlefish employ a dynamic skin display to avoid detection in the last moments of approach, ...