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Sexual dimorphism between male (top) and female (bottom) killer whales. Pectoral fins, dorsal fin, and flukes are larger in adult males. Orca pectoral fins are large and rounded, resembling paddles, with those of males significantly larger than those of females.
Often he logged differences between male and female killer whales rather than differences between species, said Michael Milstein, a spokesperson for NOAA. But his inquiry set the stage for more ...
Orcas or killer whales have a cosmopolitan distribution and several distinct populations or types have been documented or suggested. Three to five types of orcas may be distinct enough to be considered different races , [ 1 ] subspecies , or possibly even species [ 2 ] (see species problem ).
After mating, a male pilot whale usually spends only a few months with a female, and an individual may sire several offspring in the same pod. [28] Males return to their own pods when the aggregations disband, and their presence may contribute to the survival of the other pod members. [ 26 ]
Post-menopausal killer whales protect their adult sons from fights, research shows. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800 ...
Female orcas, like their human counterparts, live decades beyond their reproductive years. How killer whale grannies spend their time postmenopause Skip to main content
This type of hybrid was considered unexpected given the sometimes extreme size difference between a female common bottlenose dolphin (typically 2 meters long and 300 kilograms) and a male false killer whale (over 5 meters long and over 1,800 kg). Wholphins have been born in captivity and have also been reported in the wild. [2] [3]
Universities find post-breeding females have energy to fight battles for their sons