There’s a lot of water in the sea and it’s on the move. Find out where the major currents flow and how the oceans affect our weather.

__________________ Oceanography infobursts __________________ The pelagic realm The global conveyor Upwelling and overturn Phytoplankton Zooplankton Sea mount Gyres The Gulf Stream/    Warm currents Cold currents East-west currents/    Counter currents Ocean layers Thermocline Water colour The Sargasso Sea El Niño Global warming Weather patterns

Check out our introduction to adaptation and migration. Discover how man has an impact on the seas.

Migration infobursts **Adaptation** __________________ How marine animals move How marine animals feed How marine animals sense Lateral line __________________ **Migration** __________________ Migration introduction Migration methods Photoperiodism Vertical migration Migration distances Magnetic fields Bird migrations Mammal migrations Shark migrations Tuna migrations Turtle migrations Freshwater-saltwater migrations __________________ **Human intervention** __________________ Fishing Fishing developments Bycatch Fishing and seabirds Fishing and sharks Human navigation Navigating by the skies

Our species files describe creatures of the open oceans that are perfectly adapted to exploit transient food supplies.

Open ocean animals __________________ **Fish** __________________ Introduction Amberjack Anchoveta Basking shark Bigeye tuna Blue marlin Blue shark Bluefin tuna European eel Flying fish Great hammerhead shark Atlantic herring Jack mackerel Jacks Manta ray Remora Atlantic sailfish Atlantic salmon Sardine Shortfin mako Skipjack tuna Sockeye salmon Striped marlin Sunfish/    Common mola Swordfish Yellowfin tuna Whale shark __________________ **Mammals** __________________ Blue whale Bottlenose dolphin Fin whale/    Common rorqual Humpback whale Northern elephant seal Orca/    Killer whale South American sea lion/    Southern sea lion __________________ **Others** __________________ Green turtle Leatherback turtle By-the-wind sailor/    Purple sailor Salp Krill Birds Black-browed albatross Gulls Shearwater

	With all the facts at your fingertips, you’re ready to head for the open oceans.

	The oceans cover 71 per cent of the Earth's surface and contain 97 per cent of the Earth's water. Less than 1 per cent is fresh water, and 2-3 per cent is contained in glaciers and ice caps.