Unlike MetaFly, this bizarre creature that looks like blue goo is real and was discovered by marine scientists at the National Oceanic & Atmospheric Administration. It was spotted several times off St. Croix in the Caribbean Sea, and so far, they believe it could be either soft coral, a sponge, or tunicate, but definitely not a rock.
Why do scientists think it could be a soft coral? Well, hard corals produce a rigid skeleton made of calcium carbonate and are primary reef-building corals. Soft corals do not produce a rigid calcium carbonate skeleton and do not form reefs, thus somewhat explaining the blue goo’s appearance. They are also mostly colonial as well, which means what appears to be a single large organism at first is actually a colony of individual polyps combined to form a larger structure. These colonies tend to resemble trees, bushes, fans, whips, grasses, and possibly even goo.
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Okay we’ve now seen a number of these, and I think the mystery will remain until a sample can be collected. We’re still not sure and we all really like a good mystery. I can tell you it’s not a rock,” said one of the ROV operators.