Tim Fitzharris / Wildflowers and cacti, Caprock Canyons State Park, Texas

Tim Fitzharris / Rock arch, Atuh Beach, Nusa Penida, Bali, Indonesia

Tim Fitzharris / Ruby-throated Hummingbird (Archilochus colubris) females feeding on flower nectar, Texas

Tim Fitzharris / Ruby-throated Hummingbird (Archilochus colubris) female and Bumblebee (Bombus sp) flying, Arkansas

Tim Fitzharris / Atlantic Sailfish (Istiophorus albicans) and Magnificent Frigatebird (Fregata magnificens) flock hunting Round Sardinella (Sardinella aurita) school, Isla Mujeres, Mexico

Tim Fitzharris / Atlantic Sailfish (Istiophorus albicans) group hunting Round Sardinella (Sardinella aurita) school, Isla Mujeres, Mexico

Tim Fitzharris / Atlantic Sailfish (Istiophorus albicans) pair hunting Round Sardinella (Sardinella aurita) school, Isla Mujeres, Mexico

Tim Laman / Tapanuli Orangutan (Pongo tapanuliensis). Togus, adult flanged male Batang Toru Forest Sumatran Orangutan Conservation Project North Sumatran Province Indonesia

Tim Laman / Tapanuli Orangutan (Pongo tapanuliensis). Togus, adult flanged male. Batang Toru Forest, Sumatran Orangutan Conservation Project, North Sumatran Province, Indonesia.

Tim Laman / Tapanuli Orangutan (Pongo tapanuliensis) Beti, juvenile female, daughter of Beta, in the trees, Batang Toru Forest, Sumatran Orangutan Conservation Project, North Sumatran Province, Indonesia

Tim Laman / Tapanuli orangutan (Pongo tapanuliensis) Togus, adult flanged male, Batang Toru Forest. Sumatran Orangutan Conservation Project, North Sumatran Province, Indonesia.

Tim Fitzharris / West Indian Manatee (Trichechus manatus) group, North America

Gary Bell/ Oceanwide / Blue-green Chromis (Chromis viridis) school in reef, Great Barrier Reef, Australia

Fred Bavendam / Blue-green Chromis (Chromis viridis) courting pair, the larger male exhibits dramatically brighter coloration, typical behavior during mating, Bali, Indonesia

David Fleetham / Clown anemonefish (Amphiprion percula) hiding in Magnificent sea anemone (Heteractis magnifica), Philippines, Pacific Ocean.

Joel Sartore / Photo Ark / Green chromis (Chromis viridis) portrait, Downtown Aquarium Denver. Captive, occurs in Indo-Pacific and Red Sea.

Joel Sartore / Photo Ark / Green chromis (Chromis viridis) portrait, Downtown Aquarium Denver. Captive, occurs in Indo-Pacific and Red Sea.

David Fleetham / Coral reef with Threadfin anthias (Pseudanthias huchtii) shoal with Bluegreen chromis (Chromis viridis) amongst them, under shallow sea with a coconut tree forest in background, Philippines, Pacific...

Alex Mustard / Pair of Blue-green chromis (Chromis viridis) spawning on a rock on a coral reef, male is the larger fish, Laamu Atoll, Maldives, Indian Ocean.

Alex Mustard / Abundant growth of hard coral including (Porites sp.) and (Acropora sp.) with schools of Blue-green chromis (Chromis viridis) in the background, Laamu Atoll, Maldives, Indian Ocean.

Georgette Douwma / RF - Composite image of tropical reef fish on a black background, Rusty parrotfish (Scarus ferrugineus), Striped surgeonfish (Acanthurus lineatus), Saddleback butterflyfish (Chaetodon falcula), Seahor...

Georgette Douwma / Tropical reef fish composite image on black background, Splendid soldierfish (Myripristis melanosticta), Pajama cardinalfish (Sphaeramia nematoptera), Golden puffer (Arothron meleagris), Banggai cardi...

Alex Mustard / Rich coral garden with hard corals (Acropora sp.) and lots of blue-green chromis (Chromis viridis). Ruvus Island, Piaynemo Island, Raja Ampat, West Papua, Indonesia. Tropical West Pacific Ocean.