Related Clues:

• It's on its way out
• Shore leave?
• Outflow
• Drop in the ocean
• Hit song of the '50s
• Period of decline
• Shallow period
• Good time to collect seashells
• 1960s hit with the line "And the sea is very still once more"
• Refluent phenomenon
• A drop in the ocean?
• Hit for the Righteous Brothers
• *Drop in the ocean
• Coastal phenomenon
• Good time for a beachcomber