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In this activity, learners explore how salt water freezes in comparison to fresh water.

In this activity, learners use whale count data from the Hawaiian Islands Humpback Whale National Marine Sanctuary to compare whale counts in relation to environmental factors.

In this data analysis activity, learners quantify the abundance and distribution of sea scallops in and adjacent to the Mid-Atlantic closed areas.

In this experiment using sprigs of Elodea, learners will observe a natural process that removes carbon dioxide (CO2) from Earth's atmosphere.

In this activity (located at the top of the page), learners make an easy river strainer and see what they can catch.

In this data analysis activity, learners use data collected by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) to study Chilean sea bass populations.

In this activity, groups of learners work together to create edible models of chemicals involved in autotrophic nutrition.

In this data collection and analysis activity, learners evaluate fish physiology and ecology using vision research data from Dr.

Learners take a field trip along a local body of water and conduct a visual survey to discover information about local land use and water quality.

In this hands-on art and science activity (page 4 of the pdf), learners brainstorm and discuss how humans use wetlands, then express their understanding of the subject in artwork.

Educator Amy O'Donnell from the American Museum of Natural History guides learners to create a diorama of a coral reef.