Life in a Kelp Forest focuses attention on temperate water ecosystems where larger seaweeds (kelp) are a major source of food and shelter.Concepts presented include photosynthesis, food chains, predation and micro-habitats.Several invertebrate groups are covered in detail, including echinoderms (sea stars and their relatives), mollusks, crustaceans and cnidarians (sea anemones, hydroids and jellyfish).