New research finds some baleen whale species call at such deep frequencies that they're completely undetectable by killer whales, which cannot hear sounds below 100 hertz. These also tend to be the ...
Killer whales are the only natural predator of baleen whales — those that have "baleen" in their mouths to sieve their plankton diet from the water ...
CANBERRA, Jan. 28 (Xinhua) -- Researchers have confirmed the first case of orcas preying on a great white shark in Australian waters. In a new study, a team from Flinders University in South Australia ...