Other Aquatic reports from the 1750s
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.

Other Aquatic · Tanzania · 1750s
Captain and crew of the British ship London observed a huge serpent gripping a sperm whale with two turns around its body.