Theo Bosboom / Banded demoiselle (Calopteryx splendens) at sunrise, resting in the Common nettle, Roosendaal, the Netherlands. July.

Theo Bosboom / Banded demoiselle (Calopteryx splendens) male finding a place to roost, in common nettle, Roosendaal, the Netherlands. July.

David Woodfall / Buff tailed bumble bee (Bombus terrestris) on Marsh Woundwort (Stachys palustris) North Wales, UK, July.

Aflo / Northern sea nettle (Chrysaora Melanaster) floating, with Mackerel fry ( Carangidae) Izu, Japan. January.

Pål Hermansen,Pal Hermansen / Interior of old abandoned car, with nettles growing inside and a smashed windscreen, Varmland, Sweden

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.

Colin Varndell / Stinging nettle (Urtica dioica) foliage in spring, Dorset, UK, May

Suzi Eszterhas / Sea Nettle (Chrysaora quinquecirrha / achlyos) Monterey Bay Aquarium, California, USA, Captive

Neil Lucas / Sea nettles (Chrysaora quinquecirrha) in aquarium, with crowd of people watching, Atlanta, USA, October 2009

Richard Herrmann / Black Sea Nettle (Chrysaora achlyos), Coronado Islands, Baja California, Mexico

Richard Herrmann / Pacific Sea Nettle (Chrysaora fuscescens) group, Carmel, Monterey Bay, California

Stephen Dalton / Green aphid / Greenfly (Aphidoidea) extracting sap from stem of nettle, UK