Video timelapse of manatees swarmed by human pests

This is a mesmerizing video of the dwindling stronghold of manatees who flock to a warm water spring on the heavily populated Crystal River. Taken via an elevated boom, and shot in timelapse, it shows just how precarious this tiny habitat is for the vulnerable Florida manatee. The human encroachment in this video is suffocating to watch.

I found this video via the blog of conservation photographer Cristina Mittermeier.