Hougaard Malan / Sandhof lily pan below a supercell storm. Sandhof farm, Maltahohe, Namibia. January 2011.

Michel Roggo / Underwater landscape looking up at bubbles and water lily in ice, Doubs River, France, February

Michel Roggo / Underwater landscape with water lily in peat pond, Fribourg, Switzerland, May

Michel Roggo / Underwater landscape with water lilies, Juktan, Sweden, July

Andy Rouse / Hippopotamus (Hippopotamus amphibius) partially submerged amongst lillies, South Africa (non-ex)

Rolf Nussbaumer / Common Moorhen {Gallinula chloropus} hen with Yellow Water Lillies, Welder Wildlife Refuge, Sinton, Texas, USA.

Rolf Nussbaumer / Yellow water lillies {Nuphar lutea} in bloom on lake, Welder Wildlife Refuge, Sinton, Texas, USA.

Ernie Janes / Blue agapanthus 'Loch hope', Hydrangea arborescens,and Rudbeckia Gold sturm in woodland garden

Ernie Janes / Blue agapanthus'Loch hope,and grasses in woodland garden

Ashley Cooper / A girl picking Water lillies growing on marshland in the Shire valley near Bangula, Malawi, March 2015.

Ashley Cooper / A girl picking Water lillies growing on marshland in the Shire valley near Bangula, Malawi, March 2015.

Michael Hutchinson / Lily pond containing Santa Cruz water lilies (Victoria cruziana) and 'Kew's Stowaway Blue' lillies (Nymphaea) in glasshouse, Kew Gardens, London, England, UK.