Explore the fascinating marine life of the Triassic and Jurassic periods in this 21-minute video. Discover how life slowly recovered after the Great Dying, the largest mass extinction event at the end of the Permian period. Learn about the additional mass extinctions in the Early Triassic caused by global warming and ocean anoxia, and how life finally stabilized in the mid-Triassic. Examine the new reef builders, modernization of the ocean floor, and the evolution of various marine creatures including hexocorals, echinoids, bivalves, and vertebrates like ray-finned bony fish, sharks, and marine reptiles. Understand the impact of these changes on marine ecosystems and how they shaped the Mesozoic Era, concluding with another mass extinction event at the end of the Triassic period.