Alex Mustard / Caribbean reef shark (Carcharhinus perezi) cruises over a coral reef. Near Grand Bahama, Bahamas. Tropical West Atlantic Ocean.

Nick Upton / 2020VISION / Black slug (Arion ater), brown form, crawling over patio after rain, with house and garden bench in the background, Wiltshire, UK, July . Property released.

Jason Smalley / Close-up of Slug {Arion ater rufus} feeding on leaf, UK

Nick Upton / Violet ground beetle (Carabus violaceus) attacking a small Grey field slug / Netted slug (Deroceras reticulatum), Hertfordshire garden, UK, August.

Nick Upton / 2020VISION / Black slug (Arion ater), brown form, crawling over patio after rain, with house and garden bench in the background, Wiltshire, UK, July . Property released.

Albert Lleal / Cuba Garden Zachrysia (Zachrysia provisoria) snail, native to Cuba

Ingo Arndt / Grey Garden Slug (Derocerasáreticulatum) eggs with hatchlings, Germany

Konrad Wothe / Grey Garden Slug (Deroceras reticulatum), Bavaria, Germany

Ingo Arndt / Brown Garden Snail (Helix aspersa) climbing plant stem, Germany

David Shale / Common garden snails {Helix aspersa} and slug-pellets. Europe

David Shale / Common Garden snails {Helix aspersa} and slug pellets, Europe

Gerry Ellis / Grey Garden Slug (Derocerasáreticulatum) using slime to lower itself on to a leaf in an urban garden, Portland, Oregon

Norbert Wu / Brown Garden Snail (Helix aspersa) on rose petals covered with dew, California

Dietmar Nill / Red slug on garden path {Arion rufus} Germany