There are unique, coastal groups reported from various areas among the globe such as Scotland Shiretoko Peninsula, off Kaikoura, in Davao Gulf. University of California Press. In fact, prey can be affected by predators in other ways than direct lethal predation, in the form of stress 4changes in behaviour and anti-predator strategies 5. There are no ciliary muscles. Killer whale predation on sperm whales: Untilthe species was generally known as P. The pyramidal tract is poorly developed, reflecting the reduction of its limbs.
Annual Review of Earth and Planetary Sciences.
KW stimuli were transmitted through a speaker designed to broadcast in the 0. In contrast to the smooth skin of most other large whales, the skin on the back of the sperm whale is usually knobbly and has been likened to a prune by whale-watching enthusiasts Carwardine The species is relatively abundant from Arctic waters to the equator. Cetaceans and naval sonar — the 3S cruise report. Females stay in groups of about a dozen individuals and their young. Experts soon realized that just one such species exists.