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 ...
The team found that whale feces contained significant amounts of iron, meaning that whales fertilize the ocean as they feed and excrete waste.
A recent theory proposes that whales weren't just predators in the ocean environment: Nutrients that whales excreted may have provided a key fertilizer to these marine ecosystems. Oceanographers now ...
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