Sperm whales have a huge bulbous organ that contains a liquid wax called spermaceti, giving them their name. The wax can be cooled by deeper cold water to solidify and reduced in volume to increase the density or heated to increase the volume and decrease density. This enables them to control their buoyancy by assisting them in sinking or floating.
They have an enormous, block-shaped head, which can be one-quarter to one-third of the body length. Their back skin is also wrinkly in contrast to the smooth skin of most whales. These whales are labeled as Vulnerable as selective hunting of larger breeding males might decrease the reproduction rate.
Did you know?
- Only large makes journey ro northern and southern polar regions.
- Tend to remain between 40N and 40S latitude.
Anything we've missed?
Help us improve this page by suggesting edits. Glory never dies!Suggest an edit
Get to know me
Terrestrial / Aquatic
Altricial / Precocial
Polygamous / Monogamous
Dimorphic (size) / Monomorphic
Active: Diurnal / Nocturnal
Social behavior: Solitary / Pack / Herd / Group
Diet: Carnivore / Herbivore / Omnivore / Piscivorous / Insectivore
Migratory: Yes / No
Domesticated: Yes / No
Dangerous: Yes / No