A pod of killer whales has revived a curious trend from the 1980s in which they swim around with dead salmon balanced on their heads. Scientists observed the whales exhibiting the unusual activity ...

The organization noted that the whales were feeding on salmon in the area ... than the other types of killer whale," she said. "They're spy hopping, where their head comes out of the water ...

but salmon populations are also endangered. A federally endangered species of killer whale was spotted in the Central Coast this week, exciting whale watching crews and spurring hope for its survival.

The organization noted that the whales were feeding on salmon in the area, and did so for several hours ... "They are very active, so that means they tend to breach a lot more than the other types of ...

National Marine Fisheries Service research vessel observing a "spy hopping" Southern Resident Killer Whale off San Juan Island, Washington. Some populations of the Chinook salmon, which is the ...