Microscopic embryos and larvae of marine animals are abundant in our oceans, yet few people are aware of their existence. This video takes a close look at the early life stages of several common marine invertebrates, including sea urchins, sea stars, and sand dollars. It also reveals the plankton community that is their home during the first few weeks of their lives as Children of the Tide. Sub-titles and on-screen text are used to identify species and developmental stages. From the Series:Children of the Tide