Can You Tell a Dolphin from a Porpoise? by Buffy Silverman (9780761367345)

Description - Can You Tell a Dolphin from a Porpoise? by Buffy Silverman

How can you tell apart a dolphin and a porpoise? Do you know which is usually larger? Or which has cone-shaped teeth and which has flat teeth? Or which has a curved or hooked top fin? Find out these answers and more to become an expert on the differences between these smart swimmers.

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