Marie Lochman / Karri (Eucalyptus diversicolor), third tallest tree in the world, Western Australian endemic plant, D'Entrecasteaux National Park, April 2017

Marie Lochman / Wandoo (Eucalyptus wandoo), Western Australian endemic plant, Darling Range, December 2014

Marie Lochman / Wandoo (Eucalyptus wandoo), Western Australian endemic plant, Mt. Yetar - Darling Range, December 2014

Marie Lochman / Salmon Gum (Eucalyptus salmonophloia), Western Australian endemic plant, Dunn Rock Nature Reserve, March 2015

Marie Lochman / Red tingle tree (Eucalyptus jacksonii), Western Australian endemic plant, Walpole-Nornalup National Park, Western Australia.

Marie Lochman / Tree Top Walk - Valley of Giants, tourist attraction - walk in the canopy of Red Tingle giant eucalyptus (Eucalyptus jacksonii) trees, Walpole-Nornalup National Park, south west, Western Australia, Ja...

Steven David Miller / Red-collared lorikeet (Trichoglossus rubritorquis) pair examining hole in Eucalyptus as a potential nesting hollow. Katherine, Northern Territory, Australia.

Dave Watts / Koala (Phascolarctos cinereus), eating Eucalyptus leaves, Victoria, Australia.

Ingo Arndt / Looking up through the canopy of Eucalyptus plantation, Rwanda, Africa

Floris van Breugel / Monarch butterflies (Danaus plexippus) over winter on Eucalyptus and Monterey Cypress trees near Pismo Beach, San Luis, California, USA December.. When temperatures warm up enough, they will embark on...

MYN / Lily Kumpe / Eucalyptus Leaf Composite (Eucalyptus sp) Denmark Shire, Warren Bioregion, Western Australia. Meetyourneighbtous.net project

Sandesh Kadur / A vine growing on Eucalyptus bark, Tompotika Peninsula, Sulawesi, Indonesia.

Luiz Claudio Marigo / Machinery that cuts, peels and calculates the volume of the wood, cutting eucalyptus trees in the municipality of Linhares, Esparito Santo State, Eastren Brazil, January 2012. No release available.

Dave Watts / Musk lorikeet (Glossopsitta concinna) amongst flowers in a Eucalyptus tree, south-east Tasmania, Australia, February

Rob Tilley / Rainbow Eucalyptus (Eucalyptus sp.) bark detail. Maui, Hawaii, February.

ZSSD / Queensland Koala (Phascolarctos cinereus adustus) eating eucalyptus leaves, native to Australia

ZSSD / Queensland Koala (Phascolarctos cinereus adustus) in eucalyptus tree, native to Queensland

Jouan & Rius / Ghost Gum (Eucalyptus / Corymbia papuana) growing amongst granite boulders of Devils Marbles, Karlu Karlu Conservation Reserve, Northern Territory, Australia

Jouan & Rius / Eucalyptus tree {Eucalyptus centralis} growing beside Uluru / Ayer's Rock, Uluru / Kata Tjuta National Park, Northern Territory, Australia

Jouan & Rius / Eucalyptus trees in mountain forest, Great Otway National Park, Victoria, Australia

Jouan & Rius / Rays of sunlight penetrating Eucalyptus forest, Victoria, Australia

Jouan & Rius / Royal eucalyptus (Eucalyptus regnans) and Soft tree-ferns (Dicksonia antarctica), Tarra Bulga National Park, Victoria, Australia.

Jouan & Rius / Morning fog in eucalypt forest, Great Otway National Park, Victoria, Australia.

Jouan & Rius / Morning fog in eucalypt forest, Great Otway National Park, Victoria, Australia.

Jouan & Rius / Gum tree forest (Eucalyptus) in mist, Bunys Mountains National Park, Queensland, Australia

Gerry Ellis / Koala (Phascolarctos cinereus) male in tree, Australia

Gerry Ellis / Koala (Phascolarctos cinereus) mother and three month old joey in tree, Australia

Gerry Ellis / Koala (Phascolarctos cinereus) mother and joey, three month old, Australia

Gerry Ellis / Koala (Phascolarctos cinereus) male in tree, Australia

Shin Yoshino / Koala (Phascolarctos cinereus) feeding on Eucalyptus, Australia

John Cancalosi / Koala bear eating gum leaves, Australia

Doug Gimesy / Koala (Phascolarctos cinereus) in a Eucalyptus tree after recent bushfires, just before having a visual inspection for its health. If it is determined that a closer examination is required to determin...

Doug Gimesy / Koala (Phascolarctos cinereus) in a Eucalyptus tree after recent bushfires, just before having a visual inspection. If it is determined that a closer examination is required to determine its health, i...

David Gallan / Bushfire in spotted gum (Corymbia maculata) forest on the far south coast of New South Wales, Australia. January 2020.

David Gallan / Bushfire in spotted gum (Corymbia maculata) forest on the far south coast of New South Wales, Australia. January 2020.

Doug Gimesy / Julie Jennings, senior wildlife carer for Port Stephens Koalas, collects eucalyptus branches to feed to the koalas (Phascolarctos cinereus) under her care, using a long arm branch cutter. One Mile, NS...

Doug Gimesy / Julie Jennings, senior wildlife carer for Port Stephens Koalas, feeds bushfire burnt koala (Phascolarctos cinereus) named 'Flash', a supplementary feed, which is in addition to the eucalyptus leave Fl...

Doug Gimesy / Julie Jennings, senior wildlife carer for Port Stephens Koalas, feeds bushfire burnt koala (Phascolarctos cinereus) named 'Flash', a supplementary feed, which is in addition to the eucalyptus leave Fl...

Doug Gimesy / Julie Jennings, senior wildlife carer for Port Stephens Koalas, collects eucalyptus branches to feed to the koalas (Phascolarctos cinereus) under her care, using a long arm branch cutter. One Mile, NS...

Doug Gimesy / Bushfire victim Koala (Phascolarctos cinereus) named 'Flash' in his enclosure eating eucalyptus leaves. Flash was caught in a bushfire at Hillville near Taree (NSW) in November, 2019. He arrived to ca...

Juan Carlos Munoz / Oak (Quercus sp) forest with trees coming into leaf in spring, surrounded by Eucalyptus (Eucalyptus sp) plantation. Cueva la Cubilla, Samano, Castro Urdiales, Cantabria, Spain. April 2019.

Doug Gimesy / Rescued and orphaned Grey-headed flying-fox (Pteropus poliocephalus) in captivity, feeds on the nectar of a flowering native eucalyptus tree. Black Rock, Victoria, Australia.

Steven David Miller / Koala (Phascolarctos cinereus) sitting in Manna gum (Eucalyptus viminalis) tree, Kangaroo Island. Introduced to the island in the 1920s the population is now controlled through sterilisation and reloc...

Steven David Miller / Koala (Phascolarctos cinereus) sitting in Manna gum (Eucalyptus viminalis) tree, Kangaroo Island. Introduced to the island in the 1920s the population is now controlled through sterilisation and reloc...

Doug Gimesy / Rescued and orphaned Grey-headed flying-fox (Pteropus poliocephalus) in captivity, feeds on the nectar of a flowering native eucalyptus tree.Black Rock, Victoria, Australia.

Doug Gimesy / Rescued and orphaned Grey-headed Flying-fox (Pteropus poliocephalus) in captivity, feeds on the nectar of a flowering native eucalyptus tree. Black Rock, Victoria, Australia

Doug Gimesy / Rescued and orphaned Grey-headed flying-fox (Pteropus poliocephalus) in captivity, feeds on the pollen of a flowering native eucalyptus tree. Fly By Night Bat clinic, Olinda, Victoria, Australia.

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) hanging from a Eucalyptus tree using its wings to keep warm and protect its self from the rain. Yarra Bend Park, Kew, Victoria, Australia.

Doug Gimesy / Rescued and orphaned Grey-headed Flying-fox (Pteropus poliocephalus) in captivity, feeds on the nectar of a flowering native eucalyptus tree. Black Rock, Victoria, Australia

Doug Gimesy / Rescued and orphaned Grey-headed flying-fox (Pteropus poliocephalus) in captivity, feeds on the pollen of a flowering native eucalyptus tree. Fly By Night Bat clinic, Olinda, Victoria, Australia.

Doug Gimesy / Rescued and orphaned Grey-headed flying-fox (Pteropus poliocephalus) in captivity, feeds on the nectar of a flowering native eucalyptus tree. Black Rock, Victoria, Australia.

Doug Gimesy / Rescued and orphaned Grey-headed flying-fox (Pteropus poliocephalus) in captivity, feeding on the nectar of a flowering native eucalyptus tree. Black Rock, Victoria, Australia.

Marie Lochman / Karri (Eucalyptus diversicolor), third tallest tree in the world, Western Australian endemic plant, D'Entrecasteaux National Park, Western Australia.

Marie Lochman / Karri (Eucalyptus diversicolor), third tallest tree in the world, Western Australian endemic plant, D'Entrecasteaux National Park, April 2017

Marie Lochman / Karri (Eucalyptus diversicolor), third tallest tree in the world, Western Australian endemic plant, D'Entrecasteaux National Park, April 2017

Marie Lochman / Karri (Eucalyptus diversicolor), third tallest tree in the world, Western Australian endemic plant, D'Entrecasteaux National Park, April 2017

Marie Lochman / Karri (Eucalyptus diversicolor), third tallest tree in the world, Western Australian endemic plant, D'Entrecasteaux National Park, April 2017

Marie Lochman / Marri (Corymbia calophylla - formely Eucalyptus), Western Australian endemic plant, D'Entrecasteaux National Park, April 2017

Marie Lochman / Marri (Corymbia calophylla - formely Eucalyptus), Western Australian endemic plant, D'Entrecasteaux National Park, April 2017

Marie Lochman / Wandoo (Eucalyptus wandoo), Western Australian endemic plant, Dryandra forest - Wheatbelt, May 2018

Marie Lochman / Salmon Gum (Eucalyptus salmonophloia), Western Australian endemic plant, Dunn Rock Nature Reserve, March 2015

Marie Lochman / Salmon Gum (Eucalyptus salmonophloia), Western Australian endemic plant, Dunn Rock Nature Reserve, March 2015

Marie Lochman / Salmon Gum (Eucalyptus salmonophloia), Western Australian endemic plant, Dunn Rock Nature Reserve, March 2015

Marie Lochman / Jarrah (Eucalyptus marginata), Western Australian endemic plant, Darling Range, April 2018

Marie Lochman / Jarrah (Eucalyptus marginata), Western Australian endemic plant, Darling Range, April 2018

Marie Lochman / Jarrah (Eucalyptus marginata), Western Australian endemic plant, Darling Range, Western Australia. April 2018

Marie Lochman / Jarrah (Eucalyptus marginata), Western Australian endemic plant, Darling Range, Western Australia. April.

Marie Lochman / Jarrah (Eucalyptus marginata), Western Australian endemic plant, Darling Range, Western Australia. April 2018

Marie Lochman / Red Tingle (Eucalyptus jacksonii), Western Australian endemic plant, Walpole-Nornalup National Park, Western Australia. April 2014

Marie Lochman / Red tingle tree (Eucalyptus jacksonii), Western Australian endemic plant, Walpole-Nornalup National Park, Western Australia.

Marie Lochman / Tree Top Walk at Valley of Giants, tourist attraction - walk in the canopy of Red Tingle giant eucalyptus (Eucalyptus jacksonii) trees, Walpole-Nornalup National Park, south west, Western Australia, J...

Marie Lochman / Tree Top Walk - Valley of Giants, tourist attraction - walk in the canopy of Red Tingle giant eucalyptus (Eucalyptus jacksonii) trees, Walpole-Nornalup National Park, south west, Western Australia, Ja...

Steven David Miller / An arboreal termite nest (Order Isoptera) attached to a eucalyptus tree, Cania Gorge National Park, Queensland, Australia.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) silverback walking through farmland with potato crop to feed on Eucalyptus tree sap. Outside Volcanoes National Park, Rwanda.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) juvenile feeding on Eucalyptus tree gum, outside Volcanoes National Park, Rwanda.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) juvenile feeding on gum of Eucalyptus within Potato crop. Outside of Volcanoes National Park, Rwanda.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) silverback exploring Potato crop, outside Volcanoes National Park, Rwanda.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) juvenile, close-up of hand holding onto Eucalyptus tree. Outside of Volcanoes National Park, Rwanda.

Steven David Miller / People swimming in freshwater pools on Waterfall Creek, at the top of Gunlom Falls. Mary River, Kakadu National Park, Northern Territory, Australia. March 2014.

Steven David Miller / Freshwater pools on Waterfall Creek, at the top of Gunlom Falls. Mary River, Kakadu National Park, Northern Territory, Australia. March 2014.

Steven David Miller / Freshwater pools on Waterfall Creek, at the top of Gunlom Falls. Mary River, Kakadu National Park, Northern Territory, Australia. March 2014.

Steven David Miller / New Holland honeyeater (Phylidonyris novaehollandiae) feeding on red flowers of Eucalyptus. Kangaroo Island, South Australia.

Steven David Miller / Nankeen / Rufous night heron (Nycticorax caledonicus) perched in Eucalyptus tree. North Queensland, Australia.

Steven David Miller / Nankeen / Rufous night heron (Nycticorax caledonicus) perched in Eucalyptus tree. North Queensland, Australia.

Juergen Freund / Tracking timelapse over a creek in a dry Eucalyptus forest, Davis Creek, Wet Tropics World Heritage Area, North Queensland, Australia.

Ashley Cooper / Koala bear (Phascolarctos cinereus) Barmah Forest near Echuca, Victoria, Australia. February.

Ashley Cooper / Smoke warning sign by road, at dawn near Orbost, New South Wales, Australia. March 2010.

Ashley Cooper / Smoke warning sign by road, at dawn near Orbost, New South Wales, Australia. March 2010.

Ashley Cooper / Forest burnt by bush fires above Thredbo, Snowy mountains, Australia. February 2010.

Ashley Cooper / Dried up reservoir, Lake Eidon, the trees seen in this image were drowned by the reservoir but are now exposed due to the drought which lasted from 1996-2011, Victoria, Australia. February 2010

Ashley Cooper / Dried up reservoir, Lake Eidon, the trees seen in this image were drowned by the reservoir but are now exposed due the drought which lasted from 1996-2011, Victoria, Australia. February 2010

Ashley Cooper / Dried up reservoir, Lake Eidon, the trees seen in this image were drowned by the reservoir but are now exposed due the drought which lasted from 1996-2011, Victoria, Australia. February 2010

Ashley Cooper / Eucalyptus trees killed by the drought which lasted from 1996-2011, Lake Eucumbene, New South Wales, Australia.

Ashley Cooper / Snow Gum trees in the Snowy Mountains, Australia. February 2010. These hardy Eucalyptus trees grow very slowly around 5000 feet in the mountains.

Ashley Cooper / Red gum trees (Eucalyptus camaldulensis) growing along the banks of the Murray River. During the drought 1996-2011 75% of the Red gums are either dead or dying. Victoria, Austria, February.

Ashley Cooper / Eucalyptus tree in the Snowy mountains, Australia. February.