Historical clue formulations

• Seaweed in an underwater forest — 2026-05-25
• Member of a marine "forest" — 2025-08-28
• Edible seaweed — 2023-09-27
• ___ fries (Krusty Krab menu item) — 2023-08-25
• Underwater forest — 2022-05-20
• Food for a sea urchin — 2021-03-31
• Part of a forest that can grow as fast as two feet a day — 2020-05-02
• Aquatic source of iodine — 2019-05-31
• Growth in an underwater "forest" — 2017-02-22
• Marine growth rich in iodine — 2015-04-23
• Edible seaweed — 2011-10-04
• Seaweed used as food — 2010-03-22
• Seaweed variety — 2010-03-17
• Large brown algae — 2008-12-22
• Underwater growth — 2007-05-22
• Food for sea urchins — 2005-04-07
• Sea palm or badderlocks — 2005-01-14
• Sustenance for a sea urchin — 2004-02-05
• Food for sea urchins — 2003-07-13
• Health food — 1996-09-26
• Edible seaweed — 1996-06-16
• Seaweed — 1995-11-13
• Health food from the sea — 1995-05-08
• Iodine source — 1994-04-13