Historical clue formulations

• Some eels — 2026-06-07
• Coral reef predators — 2016-11-20
• Some eels — 2010-12-27
• Some eels — 2009-12-09
• Snaky swimmers — 2005-10-09
• Lamprey relatives — 2005-06-19
• Sharp-toothed creatures — 1997-05-04
• Tropical eels — 1995-02-13
• Coral reef predators — 1994-11-12