The First Frontier
- Episode aired Oct 25, 2023
- TV-PG
- 53m
Uninhabitable land for eons, but predation in the seas led to thriving species before and after two mass extinctions.Uninhabitable land for eons, but predation in the seas led to thriving species before and after two mass extinctions.Uninhabitable land for eons, but predation in the seas led to thriving species before and after two mass extinctions.