Mother-of-pearl is the hard ... from the latter place with jet black edges. South Sea pearl-shells are common, with white edges. The beautiful dark green pearl-shells called ear-shells or sea ...

We can’t have a list of mythical sea creatures without including the Kraken! The Kraken is a gigantic, fearsome beast that ...

This creates a material called nacre, also known as mother-of-pearl, which encases the irritant and protects the mollusc from it. When pearls are cultured commercially an irritant is manually inserted ...