As adults, certain species of whales possess baleen instead of teeth. Baleen is used to filter the whales’ diet of planktonic animals from seawater.

As adults, certain species of whales possess baleen instead of teeth. Baleen is used to filter the whales’ diet of planktonic animals from seawater. As embryos, baleen whales possess teeth, which are later replaced by baleen. The teeth of embryonic baleen whales are evidence that

 

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