| | 4-H Embryology - Includes guidelines for incubating and candling eggs, photos, movies, egg cam, and resources. Sponsored by the University of Nebraska Cooperative Extension. |
| | Activities in Biology - Provides interactive quizzes on topics such as cell biology, organ systems, ecology, and photosynthesis. |
| | Biology In Motion - Online activities for learning biology, including animated cartoons, an evolution simulation laboratory, and drag-and-drop quizzes. |
| | Biology Online - Online activities, labs and tutorials. Site available in Spanish. |
| | Biotech Adventure - A site intended to teach users about biology and biotechnology. Includes some educational illustrations and animations that can be downloaded by teachers and other educators for use in their curriculum. |
| | Common Teasers in Biology - Offers a few facts such as how an insect breaths to why a chameleon can change it's color. |
| | Cool Science For Curious Kids - Fun and interactive site to help kids appreciate science. Why are snakes like lizards, and monkeys like moose? Find out here. |
| | Discover the History of Life - Provides an introduction to phylogeny, geologic time, and evolution. |
| | Diversity of Life Web Index - Links to information about each of the kingdoms and a glossary of terms. |
| | Dr. Farabee's Online Biology Book - Well organized and illustrated general biology text from Estrella Mountain Community College, Phoenix, Arizona. Advanced, but very clearly explained and illustrated. |
| | Electronic Naturalist - Information on North American animals and plants with illustrations, text, activities, and access to a naturalist. |
| | eNature.com - The complete nature and wildlife resource featuring the Audubon Guides to plants and animals, outdoor planner and destination guide, habitat Guide, eCards, and newsletters. |
| | Fish Olympics - Introduces the natural history of the sea through a fun game. |
| | Forest Speaks Exhibit - Educational web version of the Visitor's Center exhibit at the Smithsonian Tropical Research Institute in Panama. Includes information on rainforest mammals, frogs, birds and plants. |
| | I Can Do That - Cartoon characters take you on a tour of cells, DNA, RNA and biological techniques. |
| | Just for Kids Wildlife Page - Read about moose, wild turkeys, mosquitos, hummingbirds, and bears. Learn about habitat and wildlife biology. Color a bat, falcon, warbler, or eagle. |
| | Living Things - A look at individual organisms, communities, populations, species, and ecological food webs. |
| | National Institute of Environmental Health Sciences Kids Pages - Games, music, brainteasers, and other activities that introduce children to the impact of the environment on health. |
| | OceanLink - Facts, in-depth articles, ask-a-scientist forum, archive of answers and newsletter on oceans and ocean life. |
| | Online Biology Book - Provides concise information on all aspects of biology, from biochemistry and body systems to plants and history. |
| | Science For Kids - Offers news about plants, animals, and other life science issues. Also includes pop quizzes, and pictures. Site is available in Spanish. |
| | Science Isn't Hard - Interactive GCSE Biology website. Some of the topics that it covers are cells, photosynthesis, the nervous system and homeostasis. |
| | ScienceBob.com - Enter the world of Science Bob to try home experiments, visit his on-line lab and get answers to your science questions. |
| | SeaWorld: Animal Information - Contains information books, quick fact sheets, and the small wonders that are born at SeaWorld. |
| | The Biology Project - Online interactive resource for learning biology. Content includes Biochemistry, Cell Biology, Developmental Biology, Human Biology, Molecular Biology, Mendelian Genetics, and Immunology. |
| | The Guardians of the Millennium - Describes microbiology, the rain forest and the possibility of extraterrestrial life. Also in French, German, and Spanish. |
| | The Open Door Web Site - A Natural Science reference site for middle school students. Includes topic chapters, facts and figures, questions and quizzes. Quick search and index search available, as well as an Internet guide. |
| | The Temperate Rain Forest Canopy of the Pacific Northwest - Hidden picture of canopy critters, Ask Dr. Canopy, leaf and bark rubbings, poetry, and conservation tips. |
| | The Visible Embryo - Provides a visual journey through the stages of human development from conception to birth. |
| | Thousand Eyes - A volunteer project that observes and records natural history events such as plants flowering, birds returning, frogs peeping, and weather events. Offers a field guide, graphs, maps, and reasons for the project. |
| | Tree of Life Web Project - Classification of organisms. Has diagrams showing where all organisms fit into the evolutionary tree. |
| | Wildlife-Our Wild Neighbors - Learn about wild animals through online fun and games. |