Alex Mustard / Hawksbill turtle (Eretmochelys imbricata) cruising along the drop off of a coral reef. Bloody Bay Wall, Little Cayman, Cayman Islands. Caribbean Sea. NB. Turtle has two identification tags in its fron...

Loic Poidevin / Sheep (Ovis aries) flock herded together with ear tags and paint markings. Ossoue valley, French Pyrenees, September.

Wild Wonders of Europe / Geslin / Peregrine falcon (Falco peregrinus) chick with new rings, Sagrada familia cathedral, Barcelona, Spain, April 2009

Michael Durham / Mountain Lion (Puma concolor) uncovers a young Elk (Cervus elephus nelsoni) calf that it killed and covered with debris earlier, Wallowa County, Oregon * tags and tracking collar on cat were digitally...

Yuri Shibnev / Wild Amur leopard with kill near den. Kedrovapad Nature Reserve Far East Russia, Ussuriland, South Primorskiy Region. Note ear tags

Shane Gross / Marine biologist Dr. Heather Masonjones tags a seahorse (Hippocampus erectus) to study a land locked alakaline lagoon's population. Through this method of injecting a non-toxic dye that can only b...

Shane Gross / Marine biologist Dr. Heather Masonjones tags a seahorse (Hippocampus erectus) to study a land locked alakaline lagoon's population. Through this method of injecting a non-toxic dye, that can only...

Ralph Pace / Swordfish (Xiphias gladius) with tags to determine effectiveness of fishing gear, San Diego, California

Ralph Pace / Swordfish (Xiphias gladius) with tags to determine effectiveness of fishing gear, San Diego, California

Francisco Marquez / Researcher explaining the different tags used on Greater flamingo (Phoenicopterus ruber) juveniles, Fuente de Piedra lagoon, Malaga, Spain. August.

Neil Aldridge / Blindfolded and tranquilised adult White rhinoceros (Ceratotherium simum) with tracking tags lies and recovers in the Okavango Delta, northern Botswana, following a translocation operation that involv...

Neil Aldridge / A blindfolded and tranquilised adult White rhinoceros (Ceratotherium simum) with tracking tags lies and recovers in the Okavango Delta in northern Botswana following a translocation operation that inv...