Thread:AustinDR/@comment-25008763-20190103125824/@comment-25008763-20190103130249

http://www.scaryforkids.com/boneless/

it isn't terribly well known but it is a thing, like many Shetland / Orkney tales.. the Boneless strikes me as a possible exaggeration of sea-blobs washing up on shores and locals doing what locals always do and telling stories about it.