For ecologists, the horseshoe crab is an important creature- a vastly adaptable organism that predates most species on the planet, with a lifecyle that is interlocked with other animals. Users can view information, photographs, and diagrams that explain the anatomy, range and habitat, lifecycle, ecological niche, reproductive cycle, and medical uses of the horseshoe crab. Full description.

This Internet-based collaborative project will allow students to share information about water usage with other students from around the country and the world. Based on data collected by their household members and their classmates, students will determine the average amount of water used by one person in a day. They will compare this to the average amount of water used per person per day in other ... Full description.

An interactive slide show explores the journey of a single snowflake onto and through a glacier. This journey, which can take as much as 30,000 years to complete, shows that the life cycle of a glacier can be more complex than originally perceived. Full description.

Visitors can access an alphabetic index to a large variety of fresh water-related materials on water quality, usage, laws and regulations, flooding, and ecosystems. Information resources include educational materials and a "Teachers' Corner" with booklets, activities, and fact sheets are available for teachers and are ranked according to educational level. This site is sponsored by Environment Canada, ... Full description.

These activities explain the management of ground water resources using a balanced approach, focusing on interdependencies in the environment. All activities can be performed using readily available materials. Fact sheets, reference materials, and a glossary of terms are provided. The activities cover such topics as groundwater basics, movement of water in aquifers, recharge and discharge, how a well ... Full description.

This site presents two lessons that work together to help students understand who and what pollutes our water systems, as well as what may be done to try to clean it up. The activities are interdisciplinary in nature and involve the use of critical thinking and analysis to solve a problem. Full description.

The Foundation is committed to providing balanced information regarding the use of water as a renewable energy resource in the Northwest. All segments of the public have become increasingly concerned with the costs and benefits of operating hydroelectric facilities. Environmental impacts, operational issues, economic needs, preservation of benefits such as flood control and recreation, and an increasingly ... Full description.

When different kinds of oil enter the sea, many physical, chemical and biological degradation processes start acting on them. This resource describes the factors that decide the physical, chemical and biological degradation of the oil, as well as potential environmental damage, effects on wildlife, and effects on habitats, of the spill. The text is color-coded to reflect the sources of the information, ... Full description.

This site has been created by the University of Rhode Island's Office of Marine Programs as part of the Narragansett Bay Commission's Environmental Monitoring for Public Access and Community Tracking (EMPACT) project. The site serves as a portal to find large quantities of information about the Narragansett Bay Estuarian Region. The Teacher Resource Section contains suggested classroom activities, ... Full description.

Access to and control of the Shatt-al-Arab waterway has been an ongoing conflict between the countries of Iran and Iraq. This resource explores the major issues associated with this conflict; history, religion, navigation rights and trade. Full description.