Possible New Species of Killer Whale Found Off Coast of ChileAn international team of researchers says they found a couple dozen distinctly-different orcas roaming in the oceans off southern Chile. Scientists think they may represent a new species.
U.S. Senate Passes Bill Making It Easier to Kill Sea LionsSupporters say the bill will give wildlife managers greater flexibility in controlling California sea lions that dramatically increased from about 30,000 in the 1960s to about 300,000 under the 1972 Marine Mammal Protection Act.
Melting Sea Ice Spurs Legal Fight Over Walrus ProtectionsHow well walruses cope with shrinking sea ice is at the heart of a legal fight over whether walruses should be listed as a threatened species, giving them an added protection against human encroachments.
Sea Otters Struggle to Regain Historic Range on West CoastWildlife experts up and down the West Coast are struggling to figure out how to restore southern sea otters to an undersea world that's falling apart in their absence.
Video: Sea Otter Released from Rehab in Half Moon BayYankee Doodle had been treated for a number of illnesses at the Marine Mammal Center. He is the second sea otter there to be treated and released in a one-month span.
5 Largest Animal Sanctuaries In The WorldA look at five of the world's largest protected areas...
Toxic Ocean Algae Events Could Get Worse; Conservation Group Warns Of Marine Mammal Die-OffsOfficials with the Center for Biological Diversity said toxic ocean conditions could become commonplace throughout the Northeast Pacific Ocean as the ocean becomes warmer.
Caltrans Seeking Permits To Demolish Bay Bridge Pier With Explosives, Despite Possible Marine Life DangerCaltrans is seeking permits to demolish the largest pier of the old eastern span of the Bay Bridge with explosives, a procedure that could be dangerous to native marine mammals, but Caltrans officials say it would have the least impact on bay wildlife.
Scientists Try To Determine What Killed 3 Sea Mammals Washed Ashore On SF's Ocean BeachMarine scientists are trying to figure out why several marine mammals washed ashore Ocean Beach in San Francisco on Monday.
100-Year-Old Killer Whale Grandmothers Guide Orca Pods To FoodPacific killer whale females were more likely to lead the groups than males, and the older females were more likely to lead when fish were hard to find.