Jack Dykinga / Club moss {Lycopodium sp} on trunks of Sitka spruce trees {Picea sitchensis} Hoh temperate rainforest, Olympic NP, Washington, USA

Jack Dykinga / Moss covered trunks of Sitka spruce {Picea sitchensis} and Big leaf maple {Acer macrophyllum}, also Sword ferns {Polystichum munitum} Hoh temperate rainforest, Olympic NP, Washington, USA

Tim Fitzharris / Hoh Rainforest, Olympic National Park, Washington

Floris van Breugel / Moss-covered Vine maples (Acer circinatum) in the Hoh River Rainforest of Olympic National Park, Washington, USA, May.

Floris van Breugel / Moss-covered Vine maples (Acer circinatum) and Big leaf maples (Acer macrophyllum) in the Hoh River Rainforest of Olympic National Park, Washington, USA, May.

Floris van Breugel / Maple tree covered with moss and lichen in drizzly fog along the Hoh River in Olympic National Park, Washington, February.

Jack Dykinga / Big leaf maple trees drapped in moss, wood ferns and sword ferns in the temperate rain forest of the Hoh, Olympic National Park, Washington, USA

Jack Dykinga / Big leaf maple trees drapped in moss, wood ferns and sword ferns in the temperate rain forest of the Hoh, Olympic National Park, Washington, USA

Konrad Wothe / Tree in temperate rainforest with branches covered in moss and lichen, Hoh Rainforest, Olympic National Park, Washington, USA, August

Konrad Wothe / Sitka spruce (Picea sitchensis) trees covered in lichen, temperate rainforest, Hoh Rainforest, Olympic National Park, Washington, USA, August

Konrad Wothe / Looking up the trunks of tall temperate rainforest trees, Hoh Rainforest, Olympic Nationalpark, Washington, USA

Kirkendall-Spring / Tree trunks and ferns in the Hoh Rainforest of Olympic National Park, Washington, USA, September 2009

Kirkendall-Spring / Trees, mosses and ferns in the Hoh Rainforest of Olympic National Park, Washington, USA, September 2009

Gerrit Vyn / Bigleaf maple tree (Acer macrophyllum) covered in moss, and Sword Ferns in the Hoh Rainforest. Olympic National Park, Washington, USA, March 2010.

Gerrit Vyn / Bigleaf maple trees (Acer macropyllum) covered in moss, in the Hoh Rainforest. Olympic National Park, Washington, USA, March 2010.

Aflo / N-5203 Hoh temperate rainforest, Olympic NP, Oregon, USA.

Tim Laman / Trees with their branches covered in moss in the Hoh Rainforest, Olympic National Park, Washington, USA, August 2005

Kirkendall-Spring / Moss covered trees in the old growth Hoh Rain Forest of Olympic National Park, Washington, USA, September 2009

Kevin Schafer / Bigleaf Maple (Acer macrophyllum) covered with moss and ferns, Hoh River Valley, Olympic National Park, Washington

Konrad Wothe / Moss-covered trees and dense undergrowth in the Hoh Temperate Rainforest, Olympic National Park, Washington

Konrad Wothe / Roosevelt Elk (Cervus elaphus rooseveltii) female, Hoh Rainforest, Olympic National Park, Washington

Konrad Wothe / Hall of Mosses hiking trail through Bigleaf Maples (Acer macrophyllum) and Sitka Spruces (Picea sitchensis), Hoh Rainforest, Olympic National Park, Washington

Konrad Wothe / Moss covered branches in temperate rainforest, Hoh Rainforest, Olympic National Park, Washington

Konrad Wothe / Moss covered branches in temperate rainforest, Hoh Rainforest, Olympic National Park, Washington

Konrad Wothe / Roosevelt Elk (Cervus elaphus rooseveltii) females, Hoh Rainforest, Olympic National Park, Washington

Konrad Wothe / Trail in forest, Hoh Rainforest, Olympic National Park, Washington

Konrad Wothe / Trail in forest, Hoh Rainforest, Olympic National Park, Washington

Konrad Wothe / Bigleaf Maple (Acer macrophyllum) and Sitka Spruce (Picea sitchensis) trees along Hall of Mosses hiking trail, Hoh Rainforest, Olympic National Park, Washington

Konrad Wothe / Moss covered trees, Hoh Rainforest, Olympic National Park, Washington

Konrad Wothe / Moss covered trees, Hoh Rainforest, Olympic National Park, Washington

Konrad Wothe / Rainforest interior, Hoh Rainforest, Olympic National Park, Washington

Konrad Wothe / Cedar tree, Hoh Rainforest, Olympic National Park, Washington

GEORGETTE DOUWMA / Tourists walking in Hoh Rainforest, Olympic National Park, Washington, USA

GEORGETTE DOUWMA / Hoh Rainforest, Olympic National Park, Washington, USA.

GEORGETTE DOUWMA / Hoh Rainforest, Olympic National Park, Washington, USA

GEORGETTE DOUWMA / Trees covered in moss and lichen in Hoh Rainforest, Olympic National Park, Washington, USA

GEORGETTE DOUWMA / Moss and lichen on trees, Hoh Rainforest, Olympic National Park, Washington, USA.

GEORGETTE DOUWMA / Tourist in Hoh Rainforest, Olympic National Park, Washington, USA

GEORGETTE DOUWMA / Moss and lichen on trees, Hoh Rainforest, Olympic National Park, Washington, USA.

Jack Dykinga / Sword ferns {Polystichum munitum} growing beside stream, Hoh temperate rainforest, Olympic NP, Washington, USA

Jack Dykinga / Club moss {Lycopodium sp} covering trunks of Big leaf maple {Acer macrophyllum} with Sword ferns {Polystichum munitum} and Wood sorrel {Oxalis oregana} in foreground, Hoh temperate rainforest, Olympic...

Jack Dykinga / Moss covered trunk of Big leaf maple {Acer macrophyllum} with Sword ferns {Polystichum munitum} in foreground, Hoh temperate rainforest, Olympic NP, Washington, USA

Jack Dykinga / Sword ferns {Polystichum munitum} growing beside stream, Hoh temperate rainforest, Olympic NP, Washington, USA

Jack Dykinga / Club moss {Lycopodium sp} covering trunks of Big leaf maple {Acer macrophyllum} with Sword ferns {Polystichum munitum} and Wood sorrel {Oxalis oregana} in foreground, Hoh temperate rainforest, Olympic...

Jack Dykinga / Moss covered trunks of Sitka spruce {Picea sitchensis} and Big leaf maple {Acer macrophyllum}, also Sword ferns {Polystichum munitum} Hoh temperate rainforest, Olympic NP, Washington, USA

Jack Dykinga / Club moss {Lycopodium sp} covering trunks of Big leaf maple {Acer macrophyllum} with Sword ferns {Polystichum munitum} and Wood sorrel {Oxalis oregana} in foreground, Hoh temperate rainforest, Olympic...

GEORGETTE DOUWMA / Banana slug {Ariolimax columbianus} in leaf litter, Hoh Rainforest, Olympic National Park, Washington, USA - pneumostone visible

GEORGETTE DOUWMA / Banana slug {Ariolimax columbianus} Hoh on ground, Rainforest, Olympic National Park, Washington, USA.

GEORGETTE DOUWMA / Banana slug {Ariolimax columbianus} on ground in Hoh Rainforest, Olympic National Park, Washington, USA.

David Welling / Waterfall at Hoh Rain Forest, Olympic NP, Washington, USA

Tim Edwards / Hoh tree with elevated roots having grown from nurse log, Olympic NP, Washington, USA

Tim Fitzharris / Lush vegetation in the Hoh Rain Forest, Olympic National Park, Washington

Tim Fitzharris / Sitka Spruce (Picea sitchensis) covered with moss in temperate rainforest, Hoh Rainforest, Olympic National Park, Washington

Tim Fitzharris / Mossy big-leaf maples, Hoh Rainforest, Olympic National Park, Washington

Tim Fitzharris / Red Alder (Alnus rubra) trees with moss, Hoh Rainforest, Olympic National Park, Washington

Tim Fitzharris / Moss-covered trees and dense undergrowth in the Hoh Temperate Rainforest, Olympic National Park, Washington

Gerry Ellis / Temperate rainforest, Hoh River Valley, Olympic National Forest, Washington

Matthias Breiter / Creek in Hoh Rainforest, Olympic National Park, Washington

Doug Wechsler / Sitka spruce tree trunk {Picea sitchensis} Hoh rainforest, Olympic NP, Washington, USA

Gerry Ellis / Understory fern profusion in temperate rainforest interior, Hoh Rainforest, Washington