Doug Gimesy / Scientists surgically implanting radio transponder Platypus (Ornithorhynchus anatinus) Dartmouth, Victoria, Australia. May, 2018. Model released.

Doug Gimesy / Scientist surgically implanting Platypus (Ornithorhynchus anatinus) with radio transponder. Dartmouth, Victoria, Australia. May 2018. Model released.

Doug Gimesy / Scientist surgically implanting Platypus (Ornithorhynchus anatinus) with radio transponder. Dartmouth, Victoria, Australia. May 2018. Model released.

Ingo Arndt / Scientists implanting wires in the brain of a Desert locust (Schistocerca gregaria) to measure brain activity. University of Marburg, Germany. November 2013.

Ingo Arndt / Scientists implanting wires in the brain of a Desert locust (Schistocerca gregaria) to measure brain activity. University of Marburg, Germany. November 2013.

Cyril Ruoso / Biologist implanting microchip into Oregon Spotted Frog (Rana pretiosa) raised by inmates in the Cedar Creek Correction Center. Prisoners in this facility are raising endangered frogs for release in t...

Suzi Eszterhas / Sea Otter (Enhydra lutris) researcher Tim Tinker holding captured otter in net for time depth recorder implanting, Big Sur, California

Suzi Eszterhas / Sea Otter (Enhydra lutris) captured in net by researchers for implanting a time depth recorder, blood sampling and flipper tagging, Big Sur, California

Suzi Eszterhas / Sea Otter (Enhydra lutris) captured in net by researchers for implanting a time depth recorder, blood sampling and flipper tagging, Big Sur, California

Keith Scholey / Park ranger implanting radio tag into black rhino horn {Diceros bicornis} Kenya

Suzi Eszterhas / Sea Otter (Enhydra lutris) researcher Tim Tinker holding captured otter in net for time depth recorder implanting, Big Sur, California

Petra Wegner / Cavalier King Charles Spaniel, puppy, ruby, 8 weeks, at veterinary surgeon, implanting of micro chip

Shane Gross / Researchers from Department of Fisheries and Oceans Canada stitching up Atlantic cod (Gadus morhua) juvenile after implanting a radio tag to track the fish's movements. Newfoundland, Canada. May 2...

Shane Gross / Atlantic cod (Gadus morhua) juvenile held by researchers from Department of Fisheries and Oceans Canada after implanting a radio tag to track the fish's movements. Newfoundland, Canada. May 2019.

Shane Gross / Atlantic cod (Gadus morhua) juvenile held by researcher from Department of Fisheries and Oceans Canada after implanting a radio tag to track fish's movements. Newfoundland, Canada. May 2019.