Without any other knowledge of the group, I'm concluding that this is supposed to be some attempt from them at creating a "perfect whale-human hybrid" or whatever. That seems like a cliched GoI motive, but I think I could still get behind it.
The problem is that this article just fails to interest me very much, which is a shame because I really enjoy the "fake/modified human" type anomalies. After the part where the person is born, the article skips out on most opportunities for elaboration or anything of substance. Does anything happen if the human comes in contact with civilization? It seems weird that the article just seems to "let them go" at that point. And "all recording devices and attempts at tracking fail" is a lame cop-out, as usual. 2/5
(edit: learned to speak English, kinda)