Doug Gimesy / Forest and wildlife officer (assisted by members of the Australian Defence Force) transfers a Koala (Phascolarctos cinereus) that has been captured for a health check following bush fires in the area,...

Shane Gross / Tape seagrass (Enhalus acoroides) flower, Alor, Indonesia.

Shane Gross / Seagrass (Enhalus acoroides) meadow off Flores, Indonesia.

Shane Gross / Tape Seagrass (Enhalus acoroides) seascape, Indonesia

Heather Angel / Santa Cruz water lily (Victoria cruziana) flower reflected in pond. Fragrant scent attracts beetle pollinators. In cultivation at Kew Gardens, London, England, UK. Native to South America.

John Shaw / Striated heron (Butorides striata) standing on giant Amazon waterlily leaf (Victoria amazonica). Porto Jofre, Pantanal, Brazil. September.

Nick Garbutt / Floating leaves of Giant water lily (Victoria amazonica). Northern Pantanal, Cuiaba River, Mato Grosso, Brazil.

MYN / Dirk Funhoff / Canadian pondweed (Elodea canadensis), Lindenberg, Pfalz, Germany. October. Meetyourneighbours.net project

MYN / Dirk Funhoff / Canadian pondweed (Elodea canadensis), Lindenberg, Pfalz, Germany. October. Meetyourneighbours.net project

Chris Mattison / Broad-leaved pondweed (Potamogeton natans) growing among Sphagnum moss in a small pond in Woorgreens Nature Reserve, Gloucestershire, UK

Tony Heald / Wattled Jacana (Jacana jacana) flying over Giant Waterlily (Victoria amazonica) Pantanal, Brazil

Nick Upton / Round-leaved crowfoot (Ranunculus omiophyllus) flowering in a boggy pool on the edge of Bodmin Moor, Davidstow Woods, Cornwall, UK, April.