Oh yes, much better. The intro is interesting, and you slipped in details well. I'd suggest making it clearer she's underwater in the first line or two, as she could be standing knee-deep for the first 4 sentences, so the "surface" comes as a bit of a surprise and requires a mental readjustment which is disrupting.
That last paragraph is still too info-dumpy for my taste, and I don't think you need it. You've brought out very well that turtles are being used in civilian and military circles, so there's no need to give us any further explanation at this point. Personally, I'd dump it all, but if you want it, and in this form rather than dripping it in later, then I'd suggest you go the "literary quote" way. At the start of every chapter have a couple of lines or a short paragraph which supposedly comes from a noted authority -- here you could invent a scientific journal perhaps, which sets out some historical facts about turtle use which would bring your readers up to scratch.
I noticed a few solecisms as I went through (though no more than I'd see in the average piece of work by a native English speaker). It's too late for me to do a nit-pick, but my personal bugbear was shown with "A product of careful genetic engineering, Anna’s research group" -- strictly speaking, this means the research group is a product of the genetic engineering! Since the subject of the first clause is the starfish (which perhaps should be "which" and "its" not "who" and "he"), it must also be the subject of the second, so "A product of ... engineering, the starfish was...". Alternatively, re-write it so the research group is the subject of both.
But, as I say, this is much better -- a stronger, more captivating start. Well done.
That last paragraph is still too info-dumpy for my taste, and I don't think you need it. You've brought out very well that turtles are being used in civilian and military circles, so there's no need to give us any further explanation at this point. Personally, I'd dump it all, but if you want it, and in this form rather than dripping it in later, then I'd suggest you go the "literary quote" way. At the start of every chapter have a couple of lines or a short paragraph which supposedly comes from a noted authority -- here you could invent a scientific journal perhaps, which sets out some historical facts about turtle use which would bring your readers up to scratch.
I noticed a few solecisms as I went through (though no more than I'd see in the average piece of work by a native English speaker). It's too late for me to do a nit-pick, but my personal bugbear was shown with "A product of careful genetic engineering, Anna’s research group" -- strictly speaking, this means the research group is a product of the genetic engineering! Since the subject of the first clause is the starfish (which perhaps should be "which" and "its" not "who" and "he"), it must also be the subject of the second, so "A product of ... engineering, the starfish was...". Alternatively, re-write it so the research group is the subject of both.
But, as I say, this is much better -- a stronger, more captivating start. Well done.