"Rare Video Captures Killer Whales Using Icebergs as Natural Exfoliation Stations"
Killer whales in Antarctica have been observed rubbing their bodies against icebergs, potentially as a form of exfoliation for their skin, which often accumulates algae. This behavior, captured in drone footage by National Geographic, is believed to be a temporary solution for orcas living in colder waters, where thermoregulation becomes challenging and proper molting is hindered. Scientists suggest that the orcas may migrate thousands of miles to warmer waters to molt their skin, with deferred skin molt potentially being the main driver of their long-distance migration. The rubbing behavior has also been observed in orca populations in the Pacific Northwest and British Columbia, suggesting a tactile preference for such activities.