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) effects artist Stan Winston. While flying to Japan with "Aliens" director James Cameron, Winston, who had been hired to design the Predator, was doing concept art on the flight. Cameron saw what he was drawing and said, "I always wanted to see something with mandibles." Winston then included them in his designs. Stan Winston's studio created all of the physical effects for "Predator" and "Predator 2", creating the body suit for actor Kevin Peter Hall and the mechanical facial effects. The studio was hired after attempts to create a convincing monster (including Jean-Claude Van Damme wearing a much different body