[quoteThe water is then clean and pure salt water as nature intended for shrimp. ][/quote]
You have no idea what is in ocean water.
The ocean is absolutely full of viruses.
In terms of their absolute numbers, viruses appear to be the most abundant biological entities on planet Earth. The best current estimate is that there are a whopping 1031 virus particles in the biosphere.
Seawater is full of microorganisms, and we've recently learned that those microorganisms are preyed on by viruses in a big way. Every day, about one in five living cells in the ocean is killed by a virus.[3] These viruses are found from the surface of the ocean down to the depths.[4] Because the sea is so big,[5] it contains a staggering number of viruses.