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) and electronic weaponry before challenging Dutch to a final duel. Physically outmatched, Dutch eventually sets off one of his traps, which crushes and mortally wounds the creature. After being asked what he is by Dutch, the Predator simply mimics his question and sets off his self-destruct device before laughing maniacally, though Dutch manages to escape the explosion. Set in 1997, ten years after the events of the first film, the 1990 sequel follows a new Predator who sets his sights on Los Angeles due to its summer heat and drug wars between Jamaican and Colombian cartels, as well as the