Mark (mahka42) wrote in aquamarines,

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I was on the Florida Gulf coast last weekend, and found these things all over the beach. I have no idea what they are. They seemed like they would be gelatinous, but a little poking and prodding proved that they were actually rather solid. I thought it might be some sort of echinoderm after looking at its skin, but I couldn't locate tube feet or a mouth, even after turning them over (the other side looks exactly the same). Anybody know what they are?

Mystery thing

There were also a bunch that were more yellow in color.

I'm pretty sure the purple thing it's attached to is a sponge of sorts.

Larger versions (and more) of the pictures are at

x-posted to a few bio/marine bio communities
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