Nearly 35,000 walruses were discovered this month on a northwest Alaskan shore as result of being unable to find sea ice to rest upon, a problem aggravated by climate change, the National Oceanic and Atmospheric Administration (NOAA) said. The unusually massive walrus gatherings were first spotted on Sept. 13 when NOAA conducted its annual arctic marine mammal aerial survey, a spokeswoman told the Associated Press. The marine mammals use sea ice as diving platforms to hunt for food in shallow areas, or as resting points to avoid long, exhausting swims.