This archive of ocean-color imagery produced by SeaWiFS and Aqua-MODIS contains images from 2002 to the present. The images are viewable in a variety of formats: chlorphyll concentration, sea surface temperature, aerosol index, smoke index, and many others. Yearly, seasonal, monthly, weekly, or daily images are available. Full description.

Users can access an extensive array of information on coral reefs. Materials presented here include information on reefs in 131 countries, maps and photos, data on coral bleaching, an online mapping system, a bibliography of reef-related references, and downloadable datasets. Full description.

As part of this activity, students look in their own homes for foods that contain ingredients derived from seaweed . The activity points out that seaweeds are not really weeds but large forms of marine algae, and that seaweed derivatives are used in a large variety of foods and household products. Objectives, a list of materials, instructions, and a take-home worksheet are included. Full description.