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  • OPEN OCEAN

  • EARTH’S SURFACE

    75%

    OF THE EARTH’S SURFACE IS COVERED BY OCEAN WATER

  • 7 OCEANS • NORTH ATLANTIC • SOUTH ATLANTIC • NORTH PACIFIC • SOUTH PACIFIC

    • INDIAN • ARCTIC

    • ANTARCTIC

  • CURRENTS • MOVEMENT OF WATER AROUND THE

    GLOBE

    • SURFACE CURRENTS CAUSED BY WIND

    • DEEP CURRENTS CAUSED BY

    DIFFERENCES IN TEMPERATURE AND

    SALINITY

  • GYRE

    A LARGE CIRCULAR CURRENT WHICH FLOWS BETWEEN CONTINENTS.

  • North Atlantic Current

    Canary Current

    Equatorial Current

    Gulf Stream

    NORTH ATLANTIC GYRE

  • TYPES OF ORGANISMS

    1. PLANKTON – MICROSCOPIC ORGANISMS

    WHICH DRIFT AND ARE CARRIED BY CURRENTS

  • PHYTOPLANKTON

    ONE-CELLED PLANTS

    ALGAE DIATOMS

  • ZOOPLANKTON ANIMALS THAT CAN NOT SWIM

    EGGS, LARVA, BABY FISH, JELLIES

  • TYPES OF ORGANISMS

    2. NEKTON –

    ANIMALS THAT CAN SWIM

    HAVE FINS, FLIPPERS ETC.

    FISH, SEAL,

    TURTLE, WHALE

  • TYPES OF ORGANISMS

    3. BENTHOS – ANIMALS THAT LIVE ON THE

    BOTTOM – CAN NOT SWIM

    CLAM, WORM

    CRAB, SPONGE

    http://caribou.mi.mun.ca/patricia/images/benthos.jpg

  • ECOLOGICAL PROBLEMS

    1. OVERFISHING –CATCH TOO MANY FISH & OTHER ANIMALS THAT ARE NOT WANTED BY THE FISHERMEN

  • ECOLOGICAL PROBLEMS

    2. POLLUTION – SEWAGE, GARBAGE, OIL SPILLS & AIR POLLUTANTS END UP IN THE OCEAN.

  • ECOLOGICAL PROBLEMS

    POLLUTION – FLOATABLE WASTES ARE EATEN BY MANY ANIMALS

  • ECOLOGICAL PROBLEMS

    3. GLOBAL WARMING –

    AS SEA LEVEL RISES COASTAL ANIMALS/PLANTS MUST ADAPT

    ICE MELTING WILL LOWER SALINITY WHICH WILL CHANGE THE GLOBAL CURRENTS

  • O Z C O E N A E N S

  • • SUNLIGHT CAN PENETRATE UP TO 600 FEET DEEP

    • ALL PLANTS (SEAWEEDS, ALGAE) PLANKTON, MOST FISH,

    MAMMALS,

  • • PREDATORY ANIMALS THAT COME TO THE SURFACE AT NIGHT TO FEED

    • SQUID & SHARKS

  • • MANY ORGANISMS HAVE BIOLUMINESCENCE – THEY GLOW!

    • PRODUCE LIGHT TO ATTRACT A MATE OR ATTRACT PREY

  • • ADAPTATIONS TO EXTREME HYDROSTATIC PRESSURE.

    (250X NORMAL AIR PRESSURE)

    FISH HAVE

    SMALL SKELETONS

    & LACK COLOR

  • SUMMARY • Organisms live at different depths

    • Pollution and overfishing are two big threats to the ocean

    • Organisms float, swim or crawl to more around.