Contact: Beth King
kingb@si.edu
703-487-3990 x8216
Smithsonian Tropical Research Institute

Red-Eyed Treefrog Embryos, Showing Their Bright Red External Gills

Caption: "Through a dissecting microscope you can actually see the blood circulating through the branches," explained Jessica Rogge, who conducted this study as an undergraduate at Boston University

Credit: Karen Warkentin, Boston University and STRI

Usage Restrictions: Please credit: Karen Warkentin

Related news release: Red-eyed treefrog embryos actively avoid asphyxiation inside their eggs