Experts puzzled after 'incredibly rare' creature washes up on beach: 'Something we clearly hadn't seen before'

Pieces of a seldom-seen creature from the North Sea's twilight zone have been found on a beach near Aberdeenshire, Scotland, according to the BBC.
The discovery spotlights that our understanding of the seas' depths and the creatures in it remains murky.
The sucker-laden remains belong to a blob-like, seven-armed octopus that lives at depths of up to 3,900 feet. Females can be large, weighing 165 pounds, but males are much smaller, the Monterey Bay Aquarium Research Institute repo