Water Monster reports from the 1770s
5 cases, best-documented first. Page 1 of 1.
We map claims, not creatures. A case is what some source says someone saw or heard, with the link to that source. It is not proof that anything was there, and a retelling counts once, not as a second sighting.

Water Monster · Penobscot Bay, Maine · 1779
Commodore Preble and twelve seamen chased a sea serpent thought to be 100 feet long for twelve miles in Penobscot Bay.

Water Monster · Penobscot Bay, Maine · 1778
Alexander Campbell reported seeing a sea serpent 500 feet long with a large thick mouth in Penobscot Bay.

Water Monster · Penobscot Bay, Maine · 1778
Eleazer Crabtree claimed to have seen a sea serpent in Penobscot Bay in 1778 with a description similar to Captain de Ferry's.

Water Monster · Deer Lodge County, Montana · 1779
Commodore Preblit gave chase to a sea serpent 100 feet long with a large head that moved too rapidly to overtake.

Water Monster · Topeka, Kansas · 1779
Commodore Preble and his crew pursued a sea serpent 100 feet long with a large head that moved too rapidly to be overtaken.