in Bizarre/Oddities The World’s oldest known creature, a mollusc, was 507 years old until scientists killed it by mistake by Web Desk April 25, 2016, 9:17 am 340 Views Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website By using this form you agree with the storage and handling of your data by this website. *