Two out of every three breaths you take originated from the ocean, but how? There aren’t any trees growing in the ocean! Discover the diverse world of marine plants and algae throughout these Explorer Series. Each one includes a short video, interesting facts about the topic and a set of discussion questions to engage your students and get them talking about the new concepts. Incorporate these videos in your lessons about living and nonliving things, plants, biology, taxonomy, and evolution to introduce new concepts through the lens of the ocean. Additionally, these Explorer Series can be used to introduce the similarities and differences among plants and algae as well as across marine and terrestrial plants.