Lucas Bustamante / Two Limon glass frogs (Sachatamia ilex) sitting on plant, one above the other, Canande, Esmeraldas.
01589726
Phil Savoie / Reticulated glass frog (Hyalinobatrachium valerioi) La Selva Field Station, Costa Rica.
01584706
Lucas Bustamante / Coastal glassfrog (Cochranella litoralis) on leaf with eggs. San Lorenzo, Esmeraldas, Ecuador.
01574513
Nick Garbutt / Montane Glass Frog (Centrolenella ilex) inside curled leaf. Mid-altitude rainforest, Bosque de Paz, Pacific slope, Costa Rica, Central America.
01574483
Nick Garbutt / Emerald Glass Frog (Centrolenella proseblepan) on leaf. Mid-altitude rainforest, Bosque de Paz, Pacific slope, Costa Rica, Central America.
01543690
Alex Hyde / Yellow-flecked glassfrogs (Sachatamia albomaculata) mating pair, Osa Peninsula, Costa Rica
01543688
Alex Hyde / Yellow-flecked glassfrogs (Sachatamia albomaculata) mating pair, Osa Peninsula, Costa Rica
01543523
Alex Hyde / Spined glassfrog (Teratohyla spinosa) Central Caribbean foothills, Costa Rica.
01526460
Edwin Giesbers / Reticulated glass frog (Hyalinobatrachium valerioi) captive, occurs in Colombia, Costa Rica, Ecuador, and Panama
01439828
Visuals Unlimited / Emerald Glass Frog (Centrolenella prosoblepon), sitting within leaf tunnel, Costa Rica.
01426855
Niall Benvie,Niall Benvie / Common Frog (Rana temporaria) at surface, against white background. Scotland, UK, July.
01343158
Pete Oxford / Glass Frog (Espadarana callistomma / centrolenidae). Captive. Chocó Region of northwest Ecuador.
01343086
Pete Oxford / Portrait of an Emerald Glass Frog (Espadarana / Centrolenella prosoblepon). Captive. Chocó Region of northwest Ecuador.
01307766
Alex Hyde / Madagascar reed frog {Heterixalus madagascariensis} underside viewed through glass, Masoala Peninsula National Park, north east Madagascar.
01295646
Michael D. Kern / Zoo Atlanta / White-spotted leaf frog (Cochranella albomaculata) captive, from Central America. Please credit Michael Kern / Zoo Atlanta.
Michael D. Kern / Zoo Atlanta / White spotted glass frog {Cochranella albomaculata} portrait, captive, occurs Colombia, Costa Rica, Ecuador, Panama. Please credit Michael Kern / Zoo Atlanta.
01128957
Pete Oxford / Glass frog {Hyalinobatrachium sp} Amazonia, SE Ecuador
01084850
Pete Oxford / Glass frog with eggs visible through skin {Centrolenella sp} Ecuador, South America
01049958
Doug Wechsler / Pacific giant glass frog (Centrolenella geckoideum). NW Andes (2550m), Carchi Province, Ecuador, South America
01037098
Phil Savoie / Glass frog guarding its eggs (Centrolenella fleischmanni) Belize
Phil Savoie / Glass frog on heliconia flower. (Centrolenella fleischmanni) Belize
01014181
Doug Wechsler / Glass frog in rainforest understorey, Ecuador
00760030
Christian Ziegler / Plantation Glass Frog (Hyalinobatrachiumácolymbiphyllum) is nearly transparent including the bones, only digestive tract is visible, Barro Colorado Island, Panama
00556016
Pete Oxford / Glass Frog (Hyalinobatrachium aureoguttatum) underside showing internal organs, native to South America
00556015
Pete Oxford / Glass Frog (Hyalinobatrachium aureoguttatum) underside showing internal organs, native to South America
00556014
Pete Oxford / Glass Frog (Hyalinobatrachium aureoguttatum) underside showing internal organs, native to South America
00556012
Pete Oxford / Glass Frog (Hyalinobatrachium aureoguttatum) pair, native to South America
Heidi & Hans-Juergen Koch / Glass Frog (Cochranella antisthenesi) transparent skin shows body filled with eggs, very rare and fragile frog, native to Central and South America
01657088
Guy Edwardes / Emerald glass frog (Espadarana prosoblepon). Arenal, Costa Rica.
01648020
Nick Hawkins / Emerald Glass frog (Centrolenella proseblepan) underside view, from cloud forest in Choco region, Northwestern Ecuador.
01648019
Nick Hawkins / Emerald Glass frog (Centrolenella proseblepan) in cloud forest, Choco region, Northwestern Ecuador.
01648018
Nick Hawkins / Emerald glass frog (Centrolenella proseblepan) in cloud forest, Choco region, Northwestern Ecuador.
01631675
Morley Read / Resplendent cochran frog (Cochranella resplendens) on a leaf in the rainforest understory, Pastaza Province, Ecuador.
01631674
Morley Read / Resplendent cochran frog (Cochranella resplendens) on a leaf of a flowering Centropogon plant in the rainforest understory, Pastaza Province, Ecuador.
01631673
Morley Read / Resplendent cochran frog (Cochranella resplendens) on a leaf in the rainforest understory, with an ant walking past, Pastaza Province, Ecuador, April.
01631672
Morley Read / Resplendent cochran frog (Cochranella resplendens) on a leaf in the rainforest understory, Pastaza Province, Ecuador, April.
01631619
Morley Read / Glass frog (Centrolenidae) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador.
01631618
Morley Read / Glass frog (Centrolenidae) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador.
01631617
Morley Read / Glass frog (Centrolenidae) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador.
01631596
Morley Read / Slow motion clip of a Ghost glass frog (Sachatamia ilex) jumping, Santo Domingo Province, Ecuador, February 2018.
01631595
Morley Read / Close-up of a Ghost glass frog (Sachatamia ilex) showing pulsating eye display, used to startle predators, Samto Domingo Province, Ecuador, February 2018.
01631489
Morley Read / Glass frog (Espadarana) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador. Endangered.
01631488
Morley Read / Glass frog (Espadarana) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador. Endangered.
01631487
Morley Read / Glass frog (Espadarana) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador. Endangered.
01630890
Duncan Murrell / Sri Lanka whipping frog / Hour-glass tree-frog (Polypedates cruciger), Deniyaya, Sri Lanka. Endemic to Sri Lanka