National Geographic : 2006 Jun
PHOTOJ0URNAL JOEL SARTORE Northern California's vernal pools-habitat of the vernal tadpole shrimp-are vanishing. These shrimp (above) were shot in the San Luis National Wildlife Refuge near Los Banos, California. Nebraska's Salt Creek tiger beetle (below) was added to the endangered species list in 2005. Only 153 adult tiger beetles were counted in a census last year.