Water Monster reports from the 1810s
27 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 · Gloucester, Massachusetts · 1817
A farmer killed a baby sea serpent with a pitchfork near Good Harbor beach in late summer 1817, which was exhibited and examined by a committee.

Water Monster · Finnmark, Norge · 1817
Witness reports Sir Arthur de Capel Brooke alludes to an animal seen in Olden Fiord in 1817 by fishermen.

Water Monster · Voss, Vestland · 1819
Witness reports the sea serpent appeared in 1819 off Otersnn in Norway and was seen daily during July.

Water Monster · Essex County, Massachusetts · 1817
Witness reports that in 1817, a gigantic sea snake appeared off Cape Ann, Massachusetts, described as dark chocolate colored and 60 to 100 feet long with a caterpillar motion.

Water Monster · Essex County, Massachusetts · 1817
Witness reports a young sea serpent was killed with a pitchfork and exhibited in Captain John Beach's house.

Water Monster · Gloucester, Massachusetts · 1817
Captain Tappan and his crew reported seeing a sea serpent off Gloucester that looked like a string of buoys with a serpent head.

Water Monster · Lynn, Massachusetts · 1819
Witness reports that in 1819, Nathan D. Chase of Lynn saw a sea serpent wriggle past within 100 feet at the speed of an ordinary steamer.

Water Monster · Nahant, Massachusetts · 1819
Witness reports hundreds of persons saw a celebrated sea serpent off Xahant in 1819 and followed its course for miles.

Water Monster · Mineral Park, Arizona · 1817
Witness reports Daniel Webster saw a sea serpent nearly one hundred feet long with a head like a turtle.

Water Monster · Gloucester, Massachusetts · 1817
On August 14, 1817, a sea serpent approached a boat within thirty feet, was shot at, and then sank and reappeared on the opposite side.

Water Monster · Gloucester, Massachusetts · 1817
The Linnaean Society of Boston investigated an alleged appearance of a sea serpent at Gloucester and received positive affirmations from eleven persons.

Water Monster · Gloucester, Massachusetts · 1817
Witness reports shooting at a serpent-like marine animal that sank under their boat and was later seen alive off Cape Ann.

Water Monster · Cape of Good Hope, Western Cape · 1818
Captain McQuiao and officers on H.M.S. Daedalus observed a sea serpent resembling a lizard with distinct eyes, mouth, and nostrils.

Water Monster · Richmond County, Nova Scotia · 1811
W Barry observed a large creature sixty feet in length with natural ridges or humps on its back moving in long undulations.

Water Monster · Nahant, Massachusetts · 1819
The Linnaean Society investigated another case at Nahant two years later and received testimony from two hundred persons.

Water Monster · Council Bluffs, Iowa · 1819
Witnesses report that Pawnee Indians saw a huge water monster with a black scaly neck and head rising from the river carrying a boat of white men.

Water Monster · Gloucester, Massachusetts · 1817
Witnesses report a historical sea serpent visited Gloucester harbor in the summer of 1817, was approached within 30 feet, raised its head, and sank under a boat.

Water Monster · Gloucester Harbor, Massachusetts · 1815
Fifteen people observed a sea serpent in Gloucester Harbor on June 20, 1815.

Water Monster · Gloucester, Massachusetts · 1817
Witness reports the sea serpent was first seen opposite Gloucester in 1817, with testimony considered sufficient to place its existence.

Water Monster · Nahant, Massachusetts · 1817
James Prince reports a sea serpent appearing three feet out of the water with thirteen bunches on its back, estimated at fifty to sixty feet in length.

Water Monster · Hampshire, England · 1818
Witness reports that officers on HMS St. Vincent observed a large monster with a head and shaggy mane moving rapidly between the ship and the Isle of Wight, which was later identified as a line of…

Water Monster · Richmond County, Nova Scotia · 1815
A marine monster estimated at eighty feet in length was seen aground in still water, with a head raised frequently and back covered with humps.

Water Monster · Gloucester, Massachusetts · 1817
Mr. [name] saw a sea serpent about 150 yards distant off Kettle Island and made a drawing and description of it.

Water Monster · Cape of Good Hope, Western Cape · 1818
Captain and shipmates of the British frigate Daedalus reported a serpent at least 60 feet showing swimming past with its head extended.

Water Monster · Ogden, Utah · 1817
Witness reports a sea serpent appeared in the harbor of Gloucester, Cape Ann, in 1817, seen by many different persons.

Water Monster · 1818
Witness reports that a crew on the ship Pekin saw an extraordinary thing in the water with a huge head and neck covered with a shaggy mane, which they initially believed was a great sea serpent but…

Water Monster · Maine · 1817
Rev. Abraham Cummings reports he has frequently seen a sea serpent along the coast of Maine.