Argos Behavior Message transmissions summarized dives from all tags recovered and nonrecovered. Sperm whales are not the easiest of whales to watch, due to their long dive times and ability to travel long distances underwater. Juvenile males stay with the female groups until they approach sexual maturity, when they form separate bachelor groups. If the orca pod is extremely large, they may sometimes also kill adult females. There is no way to know how many of these instances exist in the data; however, as Distance to the Seafloor was only one of 12 metrics used to group dive types, such errors should have a relatively small effect. It occurs most often alone, but small groups are also common.
Pygmy Sperm Whale
It is thought to be able to hold its breath for up to two hours, although 45 minutes is the average dive time. One function of the spermaceti organs is a buoyancy or diving organ. View inline View popup. As far as we know they don't migrate. Another evidence of large bulls of the past resides in New Bedford museum, a 5.
Sperm Whale | WildWhales
Marine Mammal Science , 15 , — Sperm whales are uniformly dark gray or dark blue-black in color, some with white undersides, but with a bright, white lining to the mouth. Sperm whales tend to travel linearly when feeding success is low Whitehead, , so the high density of locations in the area suggests the whales were foraging successfully. The irritation of the intestines caused by the beaks stimulates the secretion of this lubricant-like substance. There was a problem with your submission. Sperm whale depredation of sablefish longline gear in the northeast Pacific Ocean. Activity budget for ten sperm whales tracked in the Gulf of California, showing the percentage of each dive type made by each whale, as well as the percentage of the overall tracking period used to make each dive type.
Populations are more dense close to continental shelves and canyons, probably because of easier feeding. Journal of Animal Ecology , 75 , — Stereotypical resting behavior of the sperm whale. Your contribution may be further edited by our staff, and its publication is subject to our final approval. Disclaimer The views expressed in the paper are those of the authors and do not necessarily reflect the positions of NOAA or any other agency. They likely represent exploratory dives where the whale descended to foraging depth but then quickly returned to the surface, perhaps due to a lack of detected prey in the area. An English translation of key pages used in the analysis is provided in the electronic supplementary material.