regions of the ocean

      Pelagic Zone : also known as open sea
      Photic Zone : 0-650 ft: where photosynthesis and concurrently life occur
      Mesopelagic Zone : 650 - 3300 ft : first area of little to no light; "twilight" zone
      Bathypelagic Zone : 3300 - 13,000 ft : some whales, octupi, and squid exist here; "midnight" zone
      Abyssopelagic Zone : 13,000 - 19,500 ft : creatures here are blind and colorless; life is very sparse
      Hadalpelagic Zone : 19,500 - 33,000 ft : this region only exists in deep ocean trenches

chemical contents

      Water [H₂O/ELEMENTS #1 and #8] : 96.5%
      Chlorine [Cl/ELEMENT #17] : 1.94%
      Sodium [Na/ELEMENT #11] : 0.08%
      Sulfate [SO₄/ELEMENTS #16 and #8] : 0.27%
      Magnesium [Mg/ELEMENT #12] : 0.13%
      Calcium [Ca/ELEMENT #20] : 0.04%
      Potassium [K/ELEMENT #19] : 0.04%
              All of these elements combine to create 70% of the earth: 326 quintillion gallons of ocean water.
             That's 326,000,000,000,000,000 gallons!

modes of travel

      Boats : subcategories include canoes/ rafts/ferries; mostly used by vacationers
      Ships : for transport of trade goods; luxury models used for cruises
      Flippers/Fins : used by fish, dolphins, and whales; the most efficient of water travel
      Jetski : mostly used for recreation and sports
      Amphibious Vehicle : road vehicles with underwater capabilities; military use
      Surfboard : mostly used for recreation, sports, and sharkbait

things often seen

      Waves : water rising and receding due to the gravitational forces of the moon
      Seaweed : large number of algae stringed together; widely used as a source of food
      Ships/Barges : can be seen from shore; usually transporting goods
      Islands : relatively small pieces of land surrounded by water on all four sides

notable inhabitants

      Whales : largest species of animals in history; usually communal and friendly
      Dolphins : one of the most intelligent animals besides human; sophisticated family structure
      Urchins : very primitive round, prickly bottom-dwelling creatures
      Fish : one of the most abundant species in the ocean; scaley
      Jellyfish : bell-shaped creature with stinging tentacles; highly notorious
      Sharks : type of fish; most notorious of ocean animals; mostly very large and carnivorous
      Crabs : crustacean equipped with two claws and hard outer shell