CK-12 Foundation
Ck 12: Earth Science: Seawater Chemistry
[Free Registration/Login may be required to access all resource tools.] Describes dissolved ions in seawater and their source.
Scholastic
Scholastic Instructor: Seashore Science
Come and learn with this incredible seashore science resource. The content includes fun facts, experiments, reproducible activities, resources and more.
Sophia Learning
Sophia: Water Resources in the World
Brief video lecture discusses the importance of water as a critical life resource. [2:53] Additional video explores the human side of the story with the resulting global implications. [2:44]
Other
University of Texas at Dallas: Why Is the Sea Salty?
A clear and concise explanation of why some of the earth's waters are salty and others are not.
American Museum of Natural History
American Museum of Natural History: O Logy: Stuff to Do: Density of Salty Water
An experiment to test what happens when ocean water hits a freshwater estuary. Each step is demonstrated with photographs and the difference between salinity and density is explained.
University of California
University of California: Seawater Density & Salinity [Pdf]
Describes the properties of seawater and the variations depending on its location, e.g., near a shoreline, in an estuary, or as sea ice. Discusses the instruments scientists use to measure the density of water and explains other...
US Geological Survey
U.s. Geological Survey: The Water Cycle: The Oceans
Through pictures, diagrams, and charts, learn how the ocean serves as a storehouse of water.
US Geological Survey
U.s. Geological Survey: Saline Water
Information about saline water use in the United States.
US Geological Survey
Usgs: "Thirsty? How 'Bout Seawater?"
This U.S. Geological Survey website explains the desalinization method used by some communities to change sea water into drinking water. Click Home to access the site in Spanish.
US Geological Survey
Usgs: Water Science for Schools Why Is the Ocean Salty?
This U.S. Geological Survey website offers one explanation of why the ocean is salty. Click Home to access the site in Spanish.
US Geological Survey
Usgs: Water Science for Schools Uses of Saline Water
This U.S. Geological Survey website explains a variety of uses for saline water. Pie graphs and bar graphs are used to illustrate the various uses. Click Home to access the site in Spanish.
US Geological Survey
Usgs: All of Earth's Water in a Single Sphere!
See how all of Earth's water compares to the total size of the Earth.
PBS
Nh Pbs: Nature Works: Marine Communities
Explore saltwater ecosystems around Earth. Learn about oceans, estuaries, shores, and more.
PBS
Pbs Learning Media: The Water Planet
75% of our earth is covered by water. Water can be found in oceans, lakes, rivers, groundwater, and sea ice. View these captivating photos of our earth showing the different water sources and images of our earth taken by NASA. Background...
CK-12 Foundation
Ck 12: Second Grade Science: A World of Ice and Water
[Free Registration/Login may be required to access all resource tools.] Covers different bodies of water, including rivers, lakes, and oceans.
PBS
Nh Pbs: Nature Works: Estuaries
Learn more about estuaries when you visit this informative site. This resource provides locations of and weblinks to estuaries in the United States.
Utah STEM Foundation
Utah Stem Action Center: Floating on the Great Salt Lake
Through exploring the phenomenon that it is easier to float on salt water than on fresh water, students will develop a conceptual model for molecules and how the arrangement of molecules affects density.
NASA
Climate Kids: 10 Interesting Things About Water
Discover 10 very interesting things about water, including sources of life, ocean ecosystems, freshwater and ice, salt and salt water, sources of water, the body's water makeup, plant's consumption of water and the 3 states of water.
Unique Australian Animals
Unique Australian Animals: Oystercatcher
At this site from the Unique Australian Animals you can click here for a simple, brief overview of the characteristics and lifestyles of the Oystercatcher.
HotChalk
Hot Chalk: Lesson Plans Page: Aquatic Wildlife and Pollution
This lesson plan is designed to teach young children about healthy and hazardous marine and freshwater environments and be able to describe the effects of the pollution of plastics on wildlife.
CK-12 Foundation
Ck 12: Earth Science: Seawater Chemistry Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about the composition of ocean water. Includes a few questions to check for understanding.
US Navy
Onr: Saltwater vs. Freshwater, Which Is Denser?
This site contains an experiment on how to find out which has more density -- freshwater or saltwater.