Lucas Bustamante / Zigzag Heron (Zebrilus undulatus) camouflaged in branches while nesting. Yasuni National Park, Ecuador

Juergen Freund / White spider (Araneidae) on web with zig-zag stabilmentum, Tanjung Puting National Park, Borneo, Central Kalimantan, Indonesia

Juergen Freund / Sea squirts / ascidians / tunicates on a clam, Indo-pacific

Ernie Janes / Zigzag spiderwort (Tradescantia subaspera) cultivated plant.

Loic Poidevin / Wasp spider (Argiope bruennichi) on its web with butterfly prey wrapped in silk and showing a zigzag "stabilimentum" pattern on its web used to attract prey, Vendee, France, July.

Loic Poidevin / Underside of Wasp spider (Argiope bruennichi), its web decorated with a zigzag stabilimentum pattern used top attract prey, Vendee, France, July.

SCOTLAND: The Big Picture / View towards Aonach Eagach mountain ridge, from Buachaille Etive Beag, Scotland, UK, February.

SCOTLAND: The Big Picture / Wind created patterns in layers of packed snow on Meall Dearg with Am Bodach in background, Aonach Eagach, Glencoe, Scotland, UK, February 2017.

Tim Laman / Coral reef detail with Soft corals, sponges, and a Zigzag oyster (Lophia folium) Raja Ampat Islands, West Papua, Indonesia, April 2007

Robert Thompson / Zigzag emperor moth (Gonimbrasia tyrrhea) male, resting on tree trunk, South Africa, June

Philippe Clement / Zigzag clover in flower {Trifolium medium} Belgium

Philippe Clement / Zigzag clover flower {Trifolium medium} Belgium

Roberto Rinaldi / Honeycomb / Zigzag oyster (Hyotissa hyotis) on Ka-Hing wreck, north Sabah, Borneo, Malaysia.

Robert Valentic / Zigzag velvet gecko, male (Amalosia rhombifer) Northern Territory, Australia

Alex Hyde / Feeding trails from Common Snails (Helix aspersa) grazing algae growing on black paint. The rows of chitinous, recurved teeth (the cuticula, part of the radula) leave a distinctive zigzag pattern. Der...

Alex Hyde / Feeding trails from Common snails (Helix aspersa) grazing algae growing on black paint. The rows of chitinous, recurved teeth (the cuticula, part of the radula) leave a distinctive zigzag pattern. Der...

David Fleetham / Zigzag oyster (Lopha cristagalli) also known as the Cock's comb oyster, Yap, Federated States of Micronesia. As is often the case, this individual is covered in an encrusting sponge.

Andy Sands / Elm zigzag sawfly (Aproceros leucopoda) fairly new species to the UK a pest on Elm trees where the larvae can defoliate whole trees, Hertfordshire, England, UK, May

Nick Upton / Tilt shot of a female Wasp spider (Argiope bruennichi) on her web, showing zigzag stabilimenta threads, Wiltshire, England, UK, July.

Nick Upton / Female Wasp spider (Argiope bruennichi) on her web next to zigzag stabilimenta threads, Wiltshire, England, UK, July.

Linda Pitkin / Zigzag clover (Trifolium medium), Windsor Great Park, Surrey, England, July.

Nick Upton / Wasp spider (Argiope bruennichi) female on her web next to zigzag stabilimenta threads, in a chalk grassland meadow, Wiltshire, UK, July. This species was first recorded in the UK in Sussex in 1922 an...