"Sea star wasting syndrome" (SSWS) is a disease that affects many species of sea stars, causing them to lose turgor pressure until they eventually rip apart and turn into white puddles of goo. The origins of this disease are still uncertain, and while most researchers suspect that it is caused by a virus, other scientists like Melissa Pespeni from the University of Vermont think that SSWS is caused by a combination of environmental and genetic circumstances. Pespeni and her team studied the genome of the microbiota present in healthy and sick sea stars, and exposed a group of 37 healthy sea stars to SSWS in order to record the progression of the disease. Only 8 sea stars remained healthy after the experiment, and the results showed that their microbiomes change as the disease settles in, decreasing the numbers of beneficial bacteria in the Pseudoalteromonas genus and leading the way for opportunistic pathogens to cause more damage in the tissues. Pespeni argues that SSWS is most likely caused by pollution particles that disrupt the microbiome of healthy sea stars, allowing for the virus to attack their weakened immune systems.
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"Only 8 sea stars remained
"Only 8 sea stars remained healthy after the experiment, and the results showed that their microbiomes change as the disease settles in, decreasing the numbers of beneficial bacteria in the Pseudoalteromonas genus and leading the way for opportunistic pathogens to cause more damage in the tissues". This sentence seems a little long. Maybe you could try breaking it up into multiple sentences.
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This paragraph is good, it follows a logical flow and is interesting. I would maybe define certain words like "turgor" to make it more clear though. Also, some of your sentences are a little too long, so I would try to shorten them if possible.
I would consider breaking
I would consider breaking down some of the sentences as some of them seem to be rather long, mostly the first sentence. Also, I'm not sure if there is a better word for "goo" but it makes the paragraph seem less offical or scientific.