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  1. Fossil of 85-foot blue whale is largest ever discovered

  2. How whales and dolphins may be harmed by oil prospectors' …

  3. These endangered whales are disturbingly thin. Here's why.

  4. Whale Watching - National Geographic

  5. Orcas eat great white sharks—new insights into rare behaviour …

  6. Porpoises - National Geographic

  7. Topics, authors and photographers: b | National Geographic

  8. Seals - National Geographic

  9. Homepage | National Geographic

  10. Hostile Planet - National Geographic