in Fish Most of a sperm whale’s head is filled with a fatty… by Web Desk October 31, 2016, 8:23 am 95 Views Most of a sperm whale’s head is filled with a fatty, yellow tissue called junk. Leave a Reply Cancel replyYour email address will not be published.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. *