Patricio Robles Gil / Climbing Mantella (Mantella laevigata) a poison dart frog, Nosy Mangabe Reserve, Madagascar

Tim Fitzharris / Rhododendron (Rhododendron sp) flowers and Coast Redwood (Sequoia sempervirens) trees in fog, Redwood National Park, California

Floris van Breugel / First rays of golden sunshine hit Giant Sequoias (Sequoiadendron giganteum) covered in a winter blanket of snow and frost, Grant Grove, Sequoia / Kings Canyon National Park, California, USA November

Floris van Breugel / First rays of golden sunshine hit Giant Sequoias (Sequoiadendron giganteum) covered in a winter blanket of snow and frost, Grant Grove, Sequoia / Kings Canyon National Park, California, USA November

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in old growth Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Jeff Foott / Coast Redwood (Sequoia sempervirens) and Oak (Quercus sp) trees, Redwood National Park, California

Michael Hutchinson / Coast Giant redwood trees {Sequoia sempervirens} in the fog, Del Norte State Park, California, USA. Tallest trees in the world.

Jack Dykinga / Coast redwood (Sequoia sempervirens) with foggy dawn light. creating rays in the forest canopy. Del Norte Redwood National Park, California, USA. June.

Jack Dykinga / Redwood (Sequoia sempervirens) tree trunk with flowering Rhododenron in early morning fog with rays of sunlight in the forest canopy. Del Norte Redwood National Park, California.

Jack Dykinga / Giant redwood (Sequoia sempervirens) with flowering rhododenron in early morning fog. Del Norte Redwood National Park, California.

Jack Dykinga / Giant redwood trees (Sequoia sempervirens) in fearly morning fog, Del Norte Redwood National Park, California, USA, June.

Jack Dykinga / Redwood trees (Sequoia sempervirens) in the lush temperate rain forest, Jedediah Smith Redwood State Park, California, USA. June.

Jack Dykinga / Redwood tree (Sequoia sempervirens) with flowering rhododenron Jedediah Smith Redwoods State Park, California, USA, June.

Jack Dykinga / Giant redwood trees (Sequoia sempervirens) Prairie Creek Redwoods State & National Park, California, USA, May.

Jack Dykinga / Ancient old growth Redwood trees (Sequoia sempervirens) Jedediah Smith Redwood State Park California, USA, June.

Juan Carlos Munoz / Coast redwood (Sequoia sempervirens) trees, Natural Monument Sequoia Mount Cabezon, Cabezon de La Sal, Cantabria, Spain. May.

Juan Carlos Munoz / Coast redwood (Sequoia sempervirens) tree trunks, Natural Monument Sequoia Mount Cabezon, Cabezon de La Sal, Cantabria, Spain. May.

Juan Carlos Munoz / Coast redwood (Sequoia sempervirens) tree trunks, Natural Monument Sequoia Mount Cabezon, Cabezon de La Sal, Cantabria, Spain. May.

Juan Carlos Munoz / Coast redwood (Sequoia sempervirens) tree trunks, Natural Monument Sequoia Mount Cabezon, Cabezon de La Sal, Cantabria, Spain. May.

Juan Carlos Munoz / Coast redwood (Sequoia sempervirens) bark, Natural Monument Sequoia Mount Cabezon, Cabezon de La Sal, Cantabria, Spain. May.

Tim Fitzharris / Rhododendron (Rhododendron sp) flowers and Coast Redwood (Sequoia sempervirens) trees in fog, Redwood National Park, California

Tim Fitzharris / Rhododendron (Rhododendron sp) flowers and Coast Redwood (Sequoia sempervirens) trees in fog, Redwood National Park, California

Sebastian Kennerknecht / Mountain Lion (Puma concolor) biologist, Anna Nisi, using satellite data to determine location of den in Coast Redwood (Sequoia sempervirens) forest, Santa Cruz Puma Project, Henry Cowell Redwoods Sta...

Norbert Wu / Coast Redwood (Sequoia sempervirens) forest near Humboldt Redwoods State Park, California

Norbert Wu / Coast Redwood (Sequoia sempervirens) trees near Brookings, Oregon

Sebastian Kennerknecht / Coast Redwood (Sequoia sempervirens) tree being measured by forester, Nadia Hamey, Santa Cruz Mountains, California

Sebastian Kennerknecht / Coast Redwood (Sequoia sempervirens) stump with new growth, Santa Cruz Mountains, California

Yva Momatiuk & John Eastcott / Coast Redwood (Sequoia sempervirens) trees beside path, Redwood National Park, California

Yva Momatiuk & John Eastcott / Coast Redwood (Sequoia sempervirens) trees and ferns, Redwood National Park, California

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in old growth Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Jeff Foott / Coast Redwood (Sequoia sempervirens) burr, Redwood National Park, California

Jeff Foott / Coast Redwood (Sequoia sempervirens) burr, Redwood National Park, California

Jeff Foott / Coast Redwood (Sequoia sempervirens) burr, Redwood National Park, California

Jeff Foott / Coast Redwood (Sequoia sempervirens) trees and Pacific Rhododendron (Rhododendron macrophyllum), Redwood National Park, California

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in old growth Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in old growth Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in old growth Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in old growth Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in old growth Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in old growth Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in old growth Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in old growth Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Sebastian Kennerknecht / Coast Redwood (Sequoia sempervirens) trees and Sword Ferns (Polystichum munitum) in forest, Muir Woods National Monument, California

Sebastian Kennerknecht / Coast Redwood (Sequoia sempervirens) forest, Muir Woods National Monument, California

Sebastian Kennerknecht / Coast Redwood (Sequoia sempervirens) forest in fog, Pescadero Creek County Park, California

Chris Mattison / Coastal Redwood trees (Sequoia sempervirens) at Pfeiffer Big Sur State Park, California, USA, June..

Chris Mattison / Coastal Redwood trees (Sequoia sempervirens) at Pfeiffer Big Sur State Park, California, USA, June..

Chris Mattison / Coastal Redwood trees (Sequoia sempervirens) at Pfeiffer Big Sur State Park, California, USA, June..

Chris Mattison / Coastal Redwood trees (Sequoia sempervirens) at Pfeiffer Big Sur State Park, California, USA, June..

Jack Dykinga / Towering Coastal redwoods (Sequoia sempervirens) rising from forest understory of sword ferns and sorrel, Prairie Creek Redwoods State Park, California, May.

Jack Dykinga / Towering Coastal redwoods (Sequoia sempervirens) rising from forest understory of Wood sorrel (Oxalis), Prairie Creek Redwoods State Park, California, May.

Kevin Schafer / Fog in Redwood National Park, California

Stephen Belcher / Coast Redwood (Sequoia sempervirens) trees, Rotorua, New Zealand

Stephen Belcher / Coast Redwood (Sequoia sempervirens) tree, Rotorua, New Zealand

Tim Laman / Giant Coast Redwood tree (Sequoia sempervirens) canopy. Jedediah Smith Redwoods State Park. Jedediah Smith Redwoods State Park, California. Nov 2002.

Tim Laman / Researcher Jim Spickler with a Wandering salamander (Aneides vagrans) in a Giant coast redwood tree (Sequoia sempervirens). Prarie Creek Redwood State Park, California. Nov 2002.

Tim Laman / Researcher, Jim Spickler, with a Wandering salamander (Aneides vagrans) in a Giant coast redwood tree (Sequoia sempervirens). Prarie Creek Redwood State Park, California. Nov 2002.

Tim Laman / Researcher, Steve Sillett, up at 340 feet in the canopy of Giant Coast Redwood tree (Sequoia sempervirens) forest at Bull Creek Flats. Humboldt Redwoods State Park, California. Nov 2002.

Tim Laman / 'Del Norte Giant', the largest (by mass) Giant Coast Redwood tree (Sequoia sempervirens) in the world. Jedediah Smith Redwoods State Park, California. Nov 2002.

Tim Laman / A researcher exploring the canopy of the Giant Coast Redwood tree (Sequoia sempervirens) forest. The tree has been named 'Sacajawea'. Jedediah Smith Redwoods State Park, California. Nov 2008.

Tim Laman / A researcher exploring the canopy of the Giant Coast Redwood tree (Sequoia sempervirens) forest. The tree has been named 'Sacajawea'. Jedediah Smith Redwoods State Park, California. Nov 2008.

Tim Fitzharris / Coast Redwood (Sequoia sempervirens) trees, Mariposa Grove, Yosemite National Park, California

Gerry Ellis / Coast Redwood (Sequoia sempervirens) old-growth tree in forest with mossy trunk, vulnerable, Pacific Coast, North America

Michael Hutchinson / Coast Giant redwood tree {Sequoia sempervirens} hollowed out by fire but still alive, Redwood NP, California, USA

Michael Hutchinson / Man beside three trunked Coast Giant redwood tree {Sequoia sempervirens} Prairie Crekk Park, California, USA

Michael Hutchinson / Man beside three trunked Coast Giant redwood tree {Sequoia sempervirens} Prairie Crekk Park, California, USA

Michael Hutchinson / Coast Giant redwood trees {Sequoia sempervirens} in the fog, Del Norte State Park, California, USA. Tallest trees in the world.

Michael Hutchinson / Coast Giant redwood trees {Sequoia sempervirens} and ferns in Redwood NP, California, USA. Log and root ball of one fallen tree.

Michael Hutchinson / View along the fallen log of a Coast Giant redwood trees {Sequoia sempervirens} Redwood NP, California, USA. Tallest trees in the world.

Tim Fitzharris / Coast Redwood (Sequoia sempervirens) trunk and Pacific Rhododendron (Rhododendron macrophyllum), Del Norte Coast Redwoods State Park, Redwood National Park, California

Mark Moffett / Coast Redwood (Sequoia sempervirens) researchers climb world's tallest living tree, a 365 and one half foot tall tree named National Geographic Society Tree, Redwood National Park, California

Chase Dekker / Coast Redwood (Sequoia sempervirens) grove and trail, Henry Cowell Redwoods State Park, California

Chase Dekker / Coast Redwood (Sequoia sempervirens) grove and hiker, Henry Cowell Redwoods State Park, California

Jaymi Heimbuch / Coast Redwood (Sequoia sempervirens) needles, Butano State Park, California

Tim Fitzharris / Coast Redwood (Sequoia sempervirens) trunks, Yosemite National Park, California

Sebastian Kennerknecht / Yellow-eyed Ensatina (Ensatina eschscholtzii xanthoptica) male salamander in Coast Redwood (Sequoia sempervirens) forest, Muir Woods National Monument, California

Tim Fitzharris / Douglas Fir (Pseudotsuga menziesii) and Coast Redwood (Sequoia sempervirens) trees, Redwood National Park, California

Tim Fitzharris / Rhododendron (Rhododendron sp) flowering in Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Rob Tilley / Coast / California rhododendron (Rhododendron macrophyllum) growing in Giant / Coastal redwood (Sequoia sempervirens) forest, Prairie Creek State Park, California, USA

Nature Production / Coast Giant Redwood {Sequoia sempervirens} the tallest tree in the world, 111.25m high, Redwood National Park, California, USA

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Jack Dykinga / Pacific Rhododendron (Rhododendron macrophyllum) flowering amid misty Redwood (Sequoia sempervirens) forest in fog, Del Norte Coast Redwoods State Park, California, USA.

Jack Dykinga / Felled redwood tree (Sequoia sempervirens) amongst redwood forest, with carpet of Pacific Coast Sword Ferns (Polystichum munitum), Prairie Creek Redwoods State Park, California, USA.

Jack Dykinga / Giant redwoods (Sequoia sempervirens) silhouetted against morning fog filtering sun's rays, Del Norte Coast Redwoods State Park, California, USA.

John Shaw / Sword ferns (Polystichum munitum) at the base of Sitka spruce (Picea sitchensis) with Oregon oxalis ground cover (Oxalis oregana). Hoh Rainforest, Olympic National Park, Washington, USA, June.

Jack Dykinga / Fallen Redwood (Sequoia sempervirens) tree base in old growth temperate rainforest, Jedediah Smith Redwoods State Park, California, USA.

Jack Dykinga / Fallen Redwood (Sequoia sempervirens) tree base in old growth temperate rainforest, Jedediah Smith Redwoods State Park, California, USA.

Jack Dykinga / Fallen Redwood (Sequoia sempervirens) tree base in old growth temperate rainforest, Jedediah Smith Redwoods State Park, California, USA.

Jack Dykinga / Old growth Redwood (Sequoia sempervirens) temperate rainforest with sunrays filtering through trees on a foggy morning, Del Norte Redwoods State Park, California, USA.

Jack Dykinga / Old growth Redwood trees (Sequoia sempervirens) wrapped in Western hemlock (Tsuga heterophylla) roots in foggy temperate rainforest, Jedediah Smith Redwoods State Park, California, USA.

Jack Dykinga / Western hemlock (Tsuga heterophylla) tree rooted on a nurse log, a fallen Redwood tree (Sequoia sempervirens) in old growth temperate rainforest, Jedediah Smith Redwoods State Park, California, USA.

Jack Dykinga / Light fog over old growth Redwood trees (Sequoia sempervirens) and Red cedar (Thuja plicata) in temperate rainforest, Prairie Creek Redwoods State Park, California, USA.

Jack Dykinga / Old growth Redwood trees (Sequoia sempervirens) and Red cedar (Thuja plicata) in temperate rainforest with sunlight through trees, Prairie Creek Redwoods State Park, California, USA.

Alex Hyde / Treecreeper (Certhia familiaris) roosting at night in a hollow in the spongy, fibrous bark of a Sequoia (Sequoia sempervirens), which it has excavated. By fluffing up its plumage it can fill the hole...

Doug Gimesy / California redwoods (Sequoia sempervirens) planted in 1939, Beech Forest, Victoria, Australia.

Doug Gimesy / Woman walks through Californian Red Woods (Sequoia sempervirens). Californian Redwood Forest, Great Otway National Park, Victoria, Australia. May, 2015 MR supplied

Doug Gimesy / Californian redwoods (Sequoia sempervirens) Great Otways National Park, Victoria, Australia.