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

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

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