Plus even more whale news: grey whale die off declared over, using forensics to investigate humpbacks, a new species of orca, and a sad spate of right whale calf deaths 

Plus: new K-pod whale is confirmed as female, black lynx identified for first time, goats winning the battle against sheep and the secrets of turtle hibernation are revealed

The orca, or killer whale, is a highly recognizable species that is known for its iconic black and white colouring.  …

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