Southern Elephant Seals are helping map the ocean floor in Antarctica, http://www.newscientist.com/article/dn19687-surveyor-seals-reveal-secrets-of-antarctic-depths.html?DCMP=OTC-rss&nsref=environment.

Daniel Costa, a marine biologist at the University of California, Santa Cruz, glued electronic depth sensors onto the heads of 57 elephant seals and tracked their movements in the Bellingshausen Sea off the Antarctic Peninsula between 2005 and 2009.

"Seals are ideal because they go places where no one else has gone, and they don't need a battery to drive them," says Costa.

Thanks to this research team for your work and your partners, elephant seals!