A new way to protect manatees

Manatees meet an untimely death in collisions with watercraft and also with flood gates and boat locks. A new "underwater acoustic system" (fancy talk for a way to tell if a manatee is passing by) can keep manatees from being squished by closing locks, at least. Harbor Branch Oceanographic Institute developed the idea, according to Science Daily. The article there has all the science and how-it-works nitty gritty -- check it out!