Ancient Oceans
2019 10m[Documentary](/on-demand/category/documentary), [Short](/on-demand/category/short)
7.0
Life in the sea rebounded with a vengeance in the Devonian. Dozens of monstrous predators emerged, like the 40-foot long Dunkleosteus. Nearly everything was wiped out in Earth's second mass extinction. But the stage was set for an explosion of life on land.
