Survey and Research Highlights" PDF. The grooves between the knobs trap a consistent film of air, making it an excellent sound mirror. Upon reaching sexual maturity, males move to higher latitudes , where the water is colder and feeding is more productive. In the late eighteenth century and early nineteenth century sperm whaling ships sailed to the equatorial Pacific, the Indian Ocean, Japan, the coast of Arabia, Australia and New Zealand. What is a Whale? When dealing with a threat, sperm whales will use their huge head effectively as a battering ram.
Diet & Eating Habits
Observers have seen several humpback whales lunge-feeding up through a "bubble net", one at a time. Minke whales in the northern hemisphere prey mostly on small schooling fishes; those in the southern hemisphere prey mostly on krill. Taken off the West Coast of Iceland, ICES Journal of Marine Science , Volume 33, Issue 1, 1 November , Pages 93—, https: During migration, gray whales may occasionally feed in the water column on swimming prey. The image above shows a food web that includes a sperm whale Information and Media Sources: As the shark attempted to retreat, it was bitten and held by its tail and then around its girth and head until consumed. It is estimated to take kg lb.
Sperm Whale (Physeter macrocephalus)
The image above shows a food web that includes a sperm whale Information and Media Sources: They roll onto the right side when feeding. Scientists have observed large excavated areas on the ocean bottom in gray whale feeding grounds and have also observed surfacing gray whales trailing streams of mud. All the fish specie eaten, with one exception, are found rmally on the sea-bed, and from a consideration of th depth distributions of thes fish, together with the positions at which the whales were caught, it is suggested that the Icelandic sperm whales feed o the sea bottom to depths of at least m.
Description: Another group of killer whales was filmed attacking a blue shark Prionace glauca by striking it hard at the surface of the water with their tail flukes. Such extremely different feeding habits, which is not known to occur in any other sympatric mammal species, has also resulted in significant differences in vocalizations, echolocation, group size and behavior between the two ecotypes. Type 2 killer whales specialize in cetacean prey including dolphins, porpoises, and baleen whales such as minke whales. Type C killer whales mostly eat Antarctic toothfish Dissostichus mawsoni. Information and Media Sources: