Historical clue formulations

• Sea cow — 2026-08-15
• Creature thought to inspire mermaid legends — 2023-08-13
• Everglades mammal — 2021-01-26
• Sea cow — 2020-04-15
• Sea cow — 2018-12-23
• Everglades mammal — 2015-06-30
• SeaWorld attraction — 2012-06-01
• Marine muncher on mangrove leaves — 2010-12-18
• Endangered Everglades mammal — 2009-09-13
• Sighting off the Florida coast — 2009-06-28
• Animal on a Florida license plate — 2005-05-31
• Sea cow — 1999-08-15
• Endangered Florida creature — 1998-12-21
• Possible source of mermaid legends — 1997-05-25
• Sea cow — 1996-07-05
• Sea cow — 1994-04-12