Tag «can»

What Are FRESHWATER Pearls? | Biwa Pearls

What Are FRESHWATER Pearls? | Biwa Pearls

(upbeat music) – This is Jill Maurer, with your Jewelry Minute. And today, I’m answering the question, what is a freshwater pearl? Like the name implies, these pearls are formed in fresh water, by freshwater mussels. You’ll sometimes hear them called Biwa pearls, for the Biwa mussels that often produce freshwater pearls. It used to …

How are Underwater Structures Built?

How are Underwater Structures Built?

Water bodies are a major part of the landscape. Oceans, rivers, and lakes are often beautiful, but they’re not necessarily convenient places to build things. Most of our tools and construction materials – not to mention our labor force – work better in the dry. And yet, many types of the infrastructure we depend on …