Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) swimming close to surface. Brothers Islands, Egypt.

Nick Garbutt / Jaguar (Panthera onca palustris), male hunting amongst tree roots at edge of the Cuiaba River. Three Brothers, Porto Jofre, northern Pantanal, Mato Grosso, Brazil. August 2017.

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) accompanied by pilotfish (Naucrates ductor) as it cruises beneath the surface of the Red Sea, close to Little Brother Island. The Brothers Islands, Egy...

Tom Gilks / Tanzanian boys doing homework using oil lamp, Tanzania.

Laurent Geslin / Young Benna woman looking after cattle and showing the scars on her back, these are inflicted on teenage girls by their brothers and are considered a mark of beauty and bravery, the girls provoke thei...

Laurent Geslin / Young Benna woman looking after cattle and showing the scars on her back, these are inflicted on teenage girls by their brothers and are considered a mark of beauty and bravery, the girls provoke thei...

David Tipling / Young brother and sister bird watching in woodland in summer, Norfolk. July 2012. Model Released Model released.

Brent Stephenson / Steller's Sea Lions (Eumetopias jubatus) resting on rocks above the tideline. Zodiac with tourists watching in the background. The Brothers, Alaska, United States, July.

Jerry Monkman / Two young brothers ice fishing on the West River in Brattleboro, Vermont, USA, February 2007. Model released.

Gavin Hellier / Sunset over Ipanema Beach and Dois Irmaos (Two Brothers) mountain, Rio de Janeiro, Brazil, South AmericaSeptember 2016. Hellier

Nick Garbutt / Lion (Panthera leo) two brother with tourists in safari vehicle watching, Serengeti / Ngorongoro Conservation Area (NCA) near Ndutu, Tanzania.

Nick Garbutt / Tourists watching Lion (Panthera leo) at border of Serengeti / Ngorongoro Conservation Area (NCA) near Ndutu, Tanzania.