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

Jack Dykinga / Flowering Lobelia (Lobelia cardinalis) beside a pool with submerged Yellow pond lily (Nuphar polysepala) and Cypress (Taxodium sp) in El Cielo Biosphere Reserve, Tamaulipas, Mexico

Wild Wonders of Europe / Widstrand / Yellow water lilies (Nuphar lutea) lily pads on surface, Danube delta rewilding area, Romania

Scott Leslie / Yellow Pond Lily (Nuphar luteum) growing in swamp, Highlands Hammock State Park, Florida

Jerry Monkman / Kayaking on the Androscoggin River beside Yellow pond water lilies {Nuphar lutea} 13 Mile Woods, Errol, New Hampshire, USA

Tim Fitzharris / Yellow Pond Lily (Nuphar luteum) close up of pads, North America

Willem Kolvoort / Underwater view of Yellow water lily (Nuphar lutea) and Shining pondweed, garden pond, Holland

Willem Kolvoort / Great ramshorn snail (Planorbis corneus) feeding on alage on growing leaf of Yellow water lily, Lake Naarden, Holland

Tim Fitzharris / Yellow Pond Lily (Nuphar luteum) floating on water surface, North America

Matthias Breiter / European Yellow Pondlily (Nuphar lutea) on pond with overcast sky, Katmai National Park, Alaska