A video and a short multiple-choice quiz on the topic of aquatic ecosystems. It discusses the difference between freshwater and saltwater ecosystems, then explains what the three ecozones are in a marine ecosystem.

Students explore Earth's most important natural resource, water, and learn about how the planet's aquatic biomes thrive and support life.

[Free Registration/Login may be required to access all resource tools.] Aquatic biomes can be generally classified based on the amount of salt in the water. Freshwater biomes have less than 1% salt and are typical of ponds and lakes,...

Explore photos, watch video clips, and learn about the aquatic biome located above the continental shelf. [8:37]

[Free Registration/Login may be required to access all resource tools.] In this module, students will learn about the cycles of nature (water, carbon, nitrogen, and phosphorus) that support the flow of nutrient matter through an...

This is a comprehensive and detailed site providing information on aquatic macroinvertebrates. The emphasis is on biomonitoring of water quality through quantitative assessment of numbers and types of small aquatic organisms.

Kids learn about the freshwater aquatic biome. Ecosystems such as rivers, streams, ponds, lakes, wetlands, swamps, and bogs.

[Free Registration/Login may be required to access all resource tools.] Water pollutants can have an effect on both the ecology of ecosystems and on humans. As a result of water pollution, humans may not be able to use a waterway for...

A guide to help educators become ocean literate. The goal is to redress the lack of ocean-related content in state and national science education standards, instructional materials, and assessments. PDF (requires Adobe Reader).

Learn about the biotic and abiotic factors of lakes and ponds as well as learning how lakes form through reading and video clips.

Gone Fishin allows participants to become the captain of a fishing boat, competing for fishery resources. Students discover that if they don't set fishing limits and monitor the fish population, soon there are no fish left in the ocean.

[Free Registration/Login Required] The abcteach directory contains sample pages from their pond unit for non-members. Handouts are in PDF format.