Echinoderms

What’s Inside A Sand Dollar?

There are plenty of places where you can find sand dollars on the beach. When for the first time I found one myself, I wondered what this beautiful shell is. Not a lot of people know that these shells were actually living marine animals that belong to the phylum Echinodermata and are very close relatives…

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What Do Crown Of Thorns Starfish Eat?

As you may already know, Crown-Of-Thorns starfish is a major cause of coral loss on the Great Barrier Reef. Its plague proportions and eating habits devastate coral communities. If you wonder what exactly this starfish eat, in this post we’ll talk all about that. However, let’s start with a quick answer: Crown-Of-Thorns starfish are known…

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sand dollar moving on the sand

How Do Sand Dollars Move?

Sand dollars’ movement, like other Echinoderms, is always an interesting topic because, at first glance, they don’t have obvious limbs to do that. I remember when I was wondering myself, how they move forward, how they stay on the bottom during strong currents, or how they bury themselves in the sand. In this post, we’ll…

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What Do Sand Dollars Eat

Sand dollars are fascinating living marine creatures that a lot of people don’t even know about. Sometimes we think they are just pretty white shells with a flower shape on them. I found one myself a few years ago and I was amazed when my scuba diving instructor told me that they are actually living…

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How Is A Sand Dollar Made?

Sand dollars are very interesting, non-harmful marine creatures and are very often found on tropical beaches as beautiful white “shells” with a flower-like pattern on them. I found one myself two years ago on the coast of Panama and just like you wondered how they are made. Apparently, they look nothing like this before they…

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sand dollars on the beach

Are Sand Dollars Alive?

Sand dollars are one of the most interesting living marine creatures. I first found one myself two years ago on the coast of Panama and I thought they were just little shells with a flower on them. Apparently, they were much more than that. Just like you, I wondered whether sand dollars were dead or…

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