How Earth's First, Unkillable Animals Saved the World

Season 2 Episode 30 | 10m 12s Video has closed captioning.

They have survived every catastrophe and every mass extinction event that nature has thrown at them. And by being the little, filter-feeding, water-cleaning creatures that they are, sponges may have saved the world.

Aired: 08/11/19

Rating: NR


Problems Playing Video? | Closed Captioning