Cyril Ruoso / African elephant (Loxodonta africana) hanging upside down, during translocation by Kenya Wildlife Service, due to over population, Mwaluganje Reserve, Kenya. October 2006.

Rob Jordan / 2020VISION / Signal crayfish (Pacifastacus leniusculus) in a defensive posture after being caught by The Tweed Foundation monitoring the species population and spread on the River Till, Northumberland, England, UK...

Rob Jordan / 2020VISION / Signal crayfish (Pacifastacus leniusculus) in a defensive posture after being caught by The Tweed Foundation monitoring the species population and spread on the River Till, Northumberland, England, UK...

Matthew Maran / Estate ranger out with gun and dog to control Roe deer (Capreolus capreolus) populations to a level where their browsing does not prevent native woodland tree species from regenerating, Devon, Englan...

Matthew Maran / Estate ranger out with gun and dog to control Roe deer (Capreolus capreolus) populations to a level where their browsing does not prevent native woodland tree species from regenerating, Devon, Englan...

Pete Oxford / Great barracuda (Sphyraena barracuda) laid out on beach. Research MAR Alliance is performing population assessments on Sharks, Rays, and Great Barracuda to aid with management and protection. They are...

Brent Stephenson / Ranger restocking a poison bait station with bait used to control rodents and Brush-tailed possums (Trichosurus vulpecula) in an intensively managed sanctuary where native bird species are being reint...

Alex Mustard / Diver injecting a toxin into Crown of thorn starfish (Acanthaster planci), which feeds on reef building corals. Buyat Bay, North Sulawesi, Indonesia. Molucca Sea.

Cyril Ruoso / Man with hand on the foot of African elephant (Loxodonta africana) anesthetized during translocation by Kenya Wildlife Service, due to over population, Mwaluganje Reserve, Kenya. October 2006.

Cyril Ruoso / Man standing next to African elephant (Loxodonta africana) anesthetized during translocation by Kenya Wildlife Service, due to over population, Mwaluganje Reserve, Kenya. October 2006.

Cyril Ruoso / African elephant (Loxodonta africana) calf anesthetized during translocation by Kenya Wildlife Service, due to over population, Mwaluganje Reserve, Kenya. October 2006.

Cyril Ruoso / Men marking up African elephant (Loxodonta africana) during translocation by Kenya Wildlife Service, due to over population, Mwaluganje reserve,