As world leaders debate whether to lift a ban on commercial whaling, here's a look at 10 whales that still haven't recovered from the last round. Whales are a clever bunch, which helped them dominate Earth's oceans for millions of years and then survive a 300-year onslaught from human hunters. The same wherewithal that makes whales such elusive prey also makes them difficult for scientists to count, but decades of population surveys have at least made one thing clear: Whales aren't what they used to be.

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