Historical clue formulations

• Sea foam — 2025-11-22
• Froth — 2025-10-26
• Ocean froth — 2018-11-18
• Surf froth — 2015-05-20
• Eject, as froth — 2014-03-16
• Froth — 2010-12-02
• Froth — 2006-03-26
• Bubble up — 2004-03-27
• Foam — 1997-01-30