Related Clues:

• Bivalve mollusc
• Bivalve - may be pearl carrier
• Succulent bivalve, may bear a pearl
• Pearl-bearing sea creature
• Pearl-generating bivalve
• Black marine bivalves
• Mollusc with firmly-closed shell
• Edible mollusc
• Pearl creator
• Bi-valve with firmly-closed shell
• Black marine bivalve
• One is as uncommunicative as a mollusc
• It's one-fifty in the morning, so shut up!
• A jacket for 'er if she's under the rocks
• This ought to shut up our racket