Mermaid reports from the 1900s
1 case, 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.

Mermaid · Havre, Montana · 1904
Captain Sammis of the schooner Bt4 reported seeing a huge serpent with a woman-fish creature on its back during an October hurricane off the Jersey coast.