Fish Articles

• Frogs and Reptiles
  Extinction
  Endangered Animals
  Nature
  Ecology Research
  Zoology
   
  

  Decline in amphibian populations

  Dramatic declines in amphibian populations, including population crashes and mass localized extinction, have been noted since the 1980s from locations all over the world, and amphibian declines are ... > more
• Dolphins and Whales
  Early Mammals
  Sea Life
  Marine Biology
  Animals
  Early Humans
   
  

  Evolution of cetaceans

  The cetaceans (whales, dolphins and porpoises) are descendants of land-living mammals, and remnants of their terrestrial origins can be found in the fact that they must breathe air from the surface; ... > more
• Fish
  Marine Biology
  New Species
  Sea Life
  Invasive Species
  Frogs and Reptiles
   
  

  Stingray

  Dasyatidae is a family of rays, cartilaginous marine fishes, related to skates and sharks. Some adult rays may be no larger than a human palm, while other species, like the short-tail stingray, may ... > more
• Organic Chemistry
  Geochemistry
  Chemistry
  Biochemistry
  Acid Rain
  Pollution
   
  

  Phosphate

  In inorganic chemistry, a phosphate is a salt of phosphoric acid. Phosphates are also important in biochemistry. Surface runoff of phosphates from excessively fertilized farmland can be a cause of ... > more
• Mammals
  Endangered Animals
  Wild Animals
  Extinction
  New Species
  Animals
   
  

  Black-footed Ferret

  TThe Black-footed Ferret is a small carnivorous North American mammal. The Black-footed Ferret is the most endangered mammal in North America, according to the U. S. Fish and Wildlife Service ... > more
• Birds
  New Species
  Wild Animals
  Bird Flu Research
  Invasive Species
  Apes
   
  

  Loon

  The loon or diver is a type of aquatic bird found in many parts of North America and northern Europe. A loon is the size of a large duck, to which it is unrelated; its plumage is largely grey or ... > more
• Dolphins and Whales
  Mammals
  Animals
  Endangered Animals
  Sea Life
  Marine Biology
   
  

  Whale song

  Whale song is the sound made by whales to communicate. The word "song" is used in particular to describe the pattern of regular and predictable sounds made by some species of whales (notably the ... > more
• Hazardous Waste
  Environmental Science
  Healthy Aging
  Attention Deficit Disorder
  Sports Medicine
  Pregnancy and Childbirth
   
  

  Mercury poisoning

  Mercury poisoning, also known as mercuralism, is the phenomenon of toxication by contact with mercury. The main dangers associated with elemental mercury are that at standard conditions for ... > more
• Energy and the Environment
  Wind Energy
  Electricity
  Sustainability
  Water
  Nature of Water
   
  

  Water turbine

  A water turbine is a rotary engine that takes energy from moving water. Water turbines were developed in the nineteenth century and were widely used for industrial power prior to electrical grids. ... > more
• Insects (including Butterflies)
  Pests and Parasites
  Animals
  Agriculture and Food
  Wild Animals
  Nature
   
  

  Hematophagy

  Hematophagy (sometimes spelled haematophagy) is the habit of certain animals of feeding on ... > more

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