The Stronsay beast was a large carcass or globster[1] that washed ashore on the island of Stronsay (at the time spelled Stronsa), in the Orkney Islands, after a storm on September 25, 1808. The carcass measured 55 feet in length, but as part of the tail was apparently missing, the animal was actually longer than that (Wernerian Society Notes, 1808–1810, Library, Royal Museum, Edinburgh).[2] The Natural History Society (Wernerian Society) of Edinburgh could not identify the carcass and decided it was a new species, probably a sea serpent. Later the anatomist Sir Everard Home in London dismissed the measurement, declaring it must have been around 36 feet, and deemed it to be a decayed basking shark (basking sharks can take on a 'pseudo plesiosaur' appearance during decomposition). In 1849 the Scottish professor John Goodsir in Edinburgh came to the same conclusion. However, the largest reliably recorded basking shark was 40 feet in length, so at 55 feet in length, the Beast of Stronsay still constitutes something of a cryptozoological enigma.
Yvonne Simpson, a geneticist from Orkney, has researched the evidence and suggests that the Stronsay Beast may indeed have been an unusually large basking shark, or possibly an unknown species of shark closely related to the basking shark.[4] The drawings of the Stronsay Beast's decayed carcass are strikingly similar in shape and size to the popular image of "Nessie".[5] The monster is described as cartilaginous rather than bony, which would place it as a shark or related animal, and not a plesiosaur or whale. The third pair of appendages could be a male shark's "claspers", but male sharks are generally smaller than the female of the same species. There is also the possibility that the creature may have been an oarfish which has shown similar disparities.
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