Related Clues:

• Seafood offering unlimited possibilities?
• Pearl-producing bivalve
• Maybe grey, but the world may be yours
• Pearl grower
• Boy's terrific bags a pale pink
• Funny story about European shellfish
• Secretive person's source of profit
• Delicacy of deep regrets you're holding back
• Funny story about English person unwilling to communicate
• Regrets you harbour when looking back rather grey
• A world of personal opportunities?
• Pearl-making mollusc
• Food shellfish
• Colour of refurbished storey
• World as place of opportunity as one got out of bed?