It's obvious that before SpaceX moved in, 6 permanent residents of that little village weren't damaging that environment more than today's thousands of people working on a huge industrial site built in place of that village (and now 500 people are actually living in Starbase). SpaceX activity in that area obviously has some environmental costs, like every other industrial activity or any human settlement. The cost of human progress.

Btw, it was a seal[0][1], not a dolphin ;)

[0] https://x.com/TalulahRiley/status/320421724644573184

[1] https://x.com/TalulahRiley/status/320422298618302464