Keystone species mussel population explodes uncontrollably, driving out most other species. These creatures need not be apex predators. Sea stars are prey for sharks, rays, and sea anemones. Sea otters are prey for orca. The jaguar, whose numbers in Central and South America have been classified as near threatened, acts as a keystone predator by its widely varied diet, helping to balance the mammalian jungle ecosystem with its consumption of 87 different species of prey. The lion is another keystone species. Keystone mutualists are organisms that participate in mutually beneficial interaction and the loss of which would have a profound impact upon
Predator (fictional species) Requiem", the Predator was returned to the sleeker design concept prior to "Alien vs. Predator". For the so-called "Black Super Predators" in "Predators", the designers used the differences between a cassette tape and an iPod as an analogy in differentiating the new Predators from the classic. The Super Predators were designed as leaner and taller than the "classic" Predator design, and they have longer faces, tighter armor, and more swept back dreadlocks. Predator culture revolves around the hunting and stalking of dangerous lifeforms. After making a kill, Predators typically skin or decapitate the carcass, converting it into a trophy. If