Oceans

Salinity: Another physical characteristic of the ocean that effects where marine organisms can live

Waves: The up and down movement of surface water

Tides: The rise and fall in the water level of the ocean

Currents: The steady flow of water in a regular pattern in the ocean

Gulf stream: A strong, fast moving, warm ocean currents that originates in the Gulf of Mexico and flow in to the Atlantic Ocean

Phytoplankton: Microscopic plant-like organisms