Tony Wu / Humpback whale (Megaptera novaeangliae) adult female at rest. The tubercles on the whale's head are clearly visible, as are the barnacles (Coronula diadema), whale lice (Cyamus boopis), and hairs on t...

Solvin Zankl / The Scarce Merveille du Jour (Moma alpium) caterpillar with urticating hairs on English oak tree (Quercus robur) leaf, Stettin Lagoon, Bay of Szczecin, Germany, August.

Edwin Giesbers / Barbary macaque (Macaca sylvanus) babies hand holding onto adults fur. Gibraltar Nature Reserve, Gibraltar

Tim Laman / Huli 'singsing' dance ceremony. Huli wigmen wearing human hair wigs and feathers of various birds of paradise and other bird species. Tari Valley, Southern Highlands Province, Papua New Guinea. Novem...

Enrique Lopez-Tapia / Portrait of two Balti men, Skardu, Pakistan, June 2007.

Enrique Lopez-Tapia,Enrique Lopez-Tapia / Portrait of a Balti man, Gilgit, Pakistan, July 2007.

Juergen Freund / Spectacled flying fox (Pteropus conspicillatus) casualty of paralytic tick (Ixodes holocyclus) bite being cared for on site of colony by Jenny Mclean, North Queensland, Australia, November 2012

Alex Hyde / Human Head Louse (Pediculus humanus capitis) macro shot of claw, that allows the louse to grip onto the hairs of their human host, False-colour scanning electron micrograph (SEM).

Alex Hyde / Stinging nettle (Urtica dioica) close up of stinging hairs, the silicified tips of the stinging hairs are brittle and snap off easily if the nettle is brushed. Focus stacked image. UK.

Solvin Zankl / Trap jaw ant (Odontomachus sp.) close-up showing powerful mandibles with sensory hairs. Specimen photographed using digital focus stacking

Alex Hyde / Cape sundew (Drosera capensis) close-up of sticky droplets on leaf hairs that trap invertebrate prey, originating from South Africa.

Stephen Dalton / Cat flea {Ctenocephalides felis} jumping from cat fur, UK