Photo of the Day 4 June 2008

Schoolmaster Snappers, Conch Reef, Florida, 2003
Photograph by Brian Skerry

A column of schoolmaster snappers hovers near a support beam for the Aquarius research station near Florida's Conch Reef. Installed in 1993, this railroad-car-size unit gives scientists a permanent place to observe the creatures that live on the reef and how each plays a part in the ecosystem.