All rights reserved. Sperm whales' heads are filled with a mysterious substance called spermaceti. Scientists have yet to understand its function, but believe it may help the animal regulate its buoyancy. They have the largest brain of any creature known to have lived on Earth. Their heads also hold large quantities of a substance called spermaceti. Whalers once believed that the oily fluid was sperm, but scientists still do not understand the function of spermaceti.
Sperm Whale Facts
They also have the largest brain out of any animal known to exist. Female sperm whales on the other hand tend to be much smaller growing to lengths of 34 — 38 ft. The head of the whale contains an organ known as the spermaceti organ, hence its name, which was once believed to produce sperm, but has since been proven to serve another unknown use. Some researchers believe that the spermaceti organ assists the whale with buoyancy by allowing the whale to adjust the fluid balance and consistency within its head; after all the sperm whale is the deepest diving animal in the cetacean family. In comparison to the rest of its large block shaped head the lower jaw is long, narrow and filled with cone-shaped teeth that fit into sockets in the upper jaw. The teeth however do not appear to be necessary for biting or consuming prey as sperm whales that do not possess teeth appear to be able to consume their prey with little or no issues when compared to toothed sperm whales.
The inspiration for the white whale of Moby Dick, sperm whales have the largest heads, biggest brains, and make the loudest sound of any animal on Earth. Region: Arctic. Destinations: Lofoten, Greenland, Svalbard, Iceland. Sperm whales usually eat a little over kg almost 2, pounds of food per day. To find their prey preferably giant squid , they dive somewhere between and 1, metres and 4, feet , though they can go as deep as 2 km 1.