Juan Manuel Borrero / Illustration of Pinworms / Threadworms (Enterobius vermicularis) and eggs. Pencil and watercolor painting.

Juan Manuel Borrero / Illustration of nematode (Rhabditis sp) anatomy. Pencil and watercolor painting.

Philippe Clement / Horse / Equine roundworms (Parascaris equorum) in horse dung, France

Philippe Clement / Horse / Equine roundworms (Parascaris equorum) in horse dung, France

Chien Lee / Giant Thorny Bamboo (Bambusa bambos) forest, Thungyai-Huai Kha Khaeng Wildlife Sanctuary, Uthai Thani, Thailand

Christian Ziegler / Cushioned Star (Oreaster reticulatus) feeding in sea grass between the roots of Red Mangroves (Rhizophora mangle), Carrie Bow Cay, Belize

Pete Oxford / Yellow Stingray (Urolophus jamaicensis) in sea grass, Mahahual, Quintana Roo, Mexico

James Christensen / Bald-legged Spider (Paratropis sp) with concealing cloak of dirt and algae in which tiny nematodes live, Mindo, Ecuador

Mitsuaki Iwago / Orangutan (Pongo pygmaeus) young smiling while clinging to bamboo, Borneo, Malaysia

Mitsuaki Iwago / Orangutan (Pongo pygmaeus) young calling while clinging to bamboo, Borneo, Malaysia

Luciano Candisani / Green Sea Turtle (Chelonia mydas) feeding on sea grass, Siriba Island, Abrolhos Islands, Bahia, Brazil

Luciano Candisani / Green Sea Turtle (Chelonia mydas) resting on sea grass, Siriba Island, Abrolhos Islands, Bahia, Brazil