Actually, ending up in jail is a good option. I suspect that there are certain government agencies which, on learning that you secretly plan to release genetically-engineered insects into the wild, would just disappear you. Notably such agencies give zero shits about concepts like “international waters”.
Yes it is (with emphasis on the word “excellent”). That’s part of why doing it would make one a superhero.
Edit: I wonder if you could do this without breaking any laws if you only release the mosquitoes in international waters?
Actually, ending up in jail is a good option. I suspect that there are certain government agencies which, on learning that you secretly plan to release genetically-engineered insects into the wild, would just disappear you. Notably such agencies give zero shits about concepts like “international waters”.