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Shark survival

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Science Middle School High

Shark Embryos Fight for Survival

As plants and animals reproduce over time they are able to change and adapt to ensure or improve their chances of survival. The evolutionary goal of reproduction is paired with the concept of natural selection and survival of the fittest to determine who will reproduce. From colorful plumage to size, different species use different strategies to ensure reproduction and mate selection. The sand tiger shark has a unique strategy to ensure successful reproduction - and it depends on the timing of mating. Listen to learn more about the ultimate sibling rivalry while in the womb.

Life Science Evolution Oceans Ecosystems Reproduction

Story Length: 3:46

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National Public Radio © 2013 National Public Radio, Inc. Used with the permission of NPR. All rights reserved.

AIR DATE: 05/02/2013

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