A 300-million-year-old sea creature, previously thought to be the world's oldest octopus, has been reevaluated and found not to be an octopus. Scientists have made this determination after reexamining the fossil, with scans revealing it does not belong to the octopus species. The true nature of the creature and its place in the ocean's ecosystem are still being clarified, with some reports discussing ancient ocean predators, but the initial identification as an octopus has been disproven.