What is a Starfish?
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What is a Starfish?

It’s good to share!

You probably already know this, but starfish aren’t actually fish. They don’t have gills or any other organ that specializes in extracting oxygen from the water. And their surface area to volume ratio is so low that they can easily diffuse gases in and out via their skin. So what exactly is a starfish?  Echinoderms…