Sunset at Grand Tetons by Shannon Donaldson, Image 12.

Shannon Donaldson

Little Red by Michael Doria, Image 1.

Michael Doria

Reflective Recharge by Michael Doria, RN, Image 1.

Michael Doria, RN

In Touch with Nature by Maxine Douglas, RPh, Image 1.

Maxine Douglas, RPh

Floral Folds by Kimberley DuBose, Image 1.

Kimberley DuBose

Kissing Crane's Forever Love by Andrea Duchini, MD, Image 8.

Andrea Duchini, MD

Untitled by Toni Duculan, Image 1.

Toni Duculan

Mirrored Mountains by Brandee Duncan-Lovercheck, Image 1.

Brandee Duncan-Lovercheck

Geese in Synchrony by Theresa Echevarria, Image 3.

Theresa Echevarria

Texas Spring Full Moon by Carlos El Tallawi, MD, Image 1.

Carlos El Tallawi, MD

Natural Geometry by Zaid El-Zaatari, MD, Image 1.

Zaid El-Zaatari, MD

Garden Leaf Water Drops by Ziad El-Zaatari, MD, Image 1.

Ziad El-Zaatari, MD

Summer Hike by Rebecca Escobedo, RN, Image 21.

Rebecca Escobedo, RN

Maple Fire by Rebecca Escobedo, RN, Image 13.

Rebecca Escobedo, RN

Byron Glacier by Jason Esplana, Image 1.

Jason Esplana

Sky Meets Sea by Self Marie Fabre, Image 8.

Self Marie Fabre

Loving the Beach by Jennifer Fagen, Image 1.

Jennifer Fagen

Rice and Beans by Funmi Fayomi-Holmes, Image 1.

Funmi Fayomi-Holmes

Eastern Bluebird by Lihua Feng, Image 1.

Lihua Feng

Morning Dew by Ayumi Fielden, RN, Image 1.

Ayumi Fielden, RN

Pavé Cobbles by Craig P. Fischer, MD, Image 1.

Craig P. Fischer, MD

Web and Fall Foliage by Richard Fish, MD, Image 20.

Richard Fish, MD

Embrace Diversity by Kristy Fitzgerald, Image 1.

Kristy Fitzgerald

Feathered Friends by Debra Franco, Image 1.

Debra Franco

Marine Life by Robert L. Friedman, MD, Image 1.

Robert L. Friedman, MD

Galapagos Sea Lion Pups by Steve Fung, MD, Image 13.

Steve Fung, MD

Homage to Ansel Adams by Steve H. Fung, MD, Image 1.

Steve H. Fung, MD

Untitled by Charles Gallagher, Image 1.

Charles Gallagher

Lonesome Tree by Jose Garcia, RN, Image 17.

Jose Garcia, RN

Bay Area Park by Diana Garrett, Image 1.

Diana Garrett