Be sure to click on the Preview for more pictures of what is included in our Ocean Unit. In our ocean studies we explored• Earth’s Systems (overview)• The Hydrosphere (basic facts)• Marine Habitats• Coral Reefs (20 pages in this section)• Water Form Words (bay, estuary, lagoon, fjord, etc.)• Features of the Ocean Floor (trench, seamount, guyot, etc.)• Ocean Navigation (early navigation with astrolabes & the constellations, modern SONAR)• Salinity• Ocean Currents (Surface & Deep Sea