Whales of Iceland - The sperm whale has the most asymmetrical skull of any mammal. #whalesoficeland #whalesofinstagram #spermwhales #marinemammal #conservation | Facebook
![Sperm whales use distinct vocalizations to identify different whale clans, new research finds | Oregon State University Sperm whales use distinct vocalizations to identify different whale clans, new research finds | Oregon State University](https://today.oregonstate.edu/sites/today.oregonstate.edu/files/sperm_whale_head.jpeg)
Sperm whales use distinct vocalizations to identify different whale clans, new research finds | Oregon State University
![Male sperm whales DO use their massive foreheads to ram love rivals: Study finally confirms the long-standing theory made famous in Moby Dick | Daily Mail Online Male sperm whales DO use their massive foreheads to ram love rivals: Study finally confirms the long-standing theory made famous in Moby Dick | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2016/04/05/12/32DC768E00000578-0-image-a-1_1459857425043.jpg)