lost in time: opabinia and friends in the cambrian ocean

adaptations ancient aquatic arthropods biodiversity cambrian colorful colors community corals creatures deepsea diverse diversity dynamics ecological ecosystem ecosystems evolutionary exploration explosion fascinating flora fossils habitat habitats history interactions intricate life lively living marine marvels movement oceanic opabinia organisms period plants prehistoric primordial reef research richness scene scurrying sea seafloor sediment setting soft softbodied species trails undefined underwater unique vibrant wonders world