Every Square Inch Counts - How do scientists measure the abundance of rocky intertidal organisms? How does the subtidal zone differ from the rocky intertidal zone in organisms and abundance? Every Square Inch Counts is an activity that compares the rocky intertidal habitats of Gulf of the Farallones National Marine Sanctuary to the subtidal benthic habitat in Cordell Bank National Marine Sanctuary.

Contrasts in Blue: Life on the Caribbean Coral Reef and the Rocky Coast of Maine - The Smithosonian has produced this excellent resource that compares the rocky shore environment of Maine to the coral reef environment of the Caribbean. Lesson plans are on the webpages, and maps and activity sheets are available in PDF format. Grades 3-8.

Rocky Intertidal Habitats - Information from the Monterey Bay National Marine Sanctuary on rocky intertidal habitats and their biological diversity, distribution patterns, temporal changes, links to other habitats, and management issues.

Marine Habitats: The Intertidal Zone -Site has lesson plans describing life in the intertidal zone. Supporting materials for the lesson plans include: video clips, powerpoint presentations, links, and and assessment guide.

Natural History of Nova Scotia Topics & Habitats: Rocky Shore - Download a packet of information on the plants, animals, ecosystem, and physical aspects of rocky shores.