Water Worlds1 सीजन7 एपिसोड

The Sea of Glass

Documentary
English
Once thought extinct, glass sponge reefs are rediscovered in the 1980s deep off Canada's West Coast. Scientists and researchers need specialised deep-sea technology to study these ancient and fragile ecosystems.
उपशीर्षक :
English (CC)
देश:
Canada
निर्देशक:
कलाकार सूची:
सलाह:
Adult Themes