no ordinary world

Sea Otters: Adorable, Endangered, and A Keystone Species

  This cuddly creature is a sea otter, or Enhydra lutris, a well-known marine mammal native to the coasts of the northern and eastern North Pacific Ocean.  This furry, playful fellow is more than just adorable, however.  Otters are a keystone species. In architecture, the keystone at the top of an arch holds the arch together.  Without the keystone, the whole arch and building surrounding it will collapse.  Similarly, some species of animals are called "keystone species," meaning that a whole ecosystem, or interplay between living organisms and their surroundings, depends on that particular species to keep it running smoothly....