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Mark Kostich

Cute juvenile American Alligator in Florida marsh
00:20
Closeup image of a male Cuban Crocodile swimming in water
Osprey bobbing head and looking at camera- Slow motion
00:36
Limpkin bird carrying a freshwater clam
Limpkin bird wading in marshland
Florida turtle covered in duckweed - Slow Motion
00:25
A large Brown Bear stands on a overturned tree at Brooks River in Alaska
Two Brown Bears fighting in Brooks River, Alaska
Close-up profile of a White Ibis bird
Gallinule swimming with open mouth
Menacing alligator swimming in water
00:40
A juvenile male Ruby-throated Hummingbird drinking from feeder, flashing his one red throat feather - Slow Motion
00:17
Brown Bear Divot 854 carrying a Sockeye Salmon at Brooks Falls - Slow Motion - Part 5
00:30
Brown Bear Divot 854 with a Sockeye Salmon at Brooks Falls - Slow Motion - Part 3
00:30
Brown Bear Divot 854 catching a Sockeye Salmon at Brooks Falls - Slow Motion - Part 2
00:30
Brown Bear Divot 854 missing a Sockeye Salmon at Brooks Falls - Slow Motion - Part 1
00:15
Four Grizzly Bear cubs playing together - Slow Motion
00:26
Slow Motion Closeup of a Blue Heron
00:17
Sockeye Salmon jumping Brooks Falls in Katmai National Park, Alaska - Slow Motion
00:30
3 week old baby Indian rhinoceros
Osprey landing in nest of Spanish Moss
Closeup of a Catalina Macaw
Native blue heron eating an invasive blue tilapia, as the mouth brooding fish expels her eggs.
Juvenile Southern White Rhinoceros grazing
Costa Rica Jumping Viper with forked tongue
Sichuan Takin (Tibetan taxicolor budorcas) in field.
Sockeye Salmon in spawning colors in Brooks River, Alaska
Cardinal and Goldfinch at bird feeder with snow falling
00:51
American Crocodile swimming in river
Brown Bear 907 eating a sockeye salmon in Brooks River, Alaska
Brown Bear 907 eating a sockeye salmon in Brooks River, Alaska
Osprey and Belted Kingfisher birds in tree
00:16
Alligator floating in river with eyes above water
00:29
Slow motion clip of a large alligator on a river bank
00:30
Slow motion clip of an menacing alligator swimming in reflective waters
00:20
Slow motion clip of an menacing alligator swimming in reflective waters
00:30
Two Brown Bears waiting for fish at Brooks Falls - Slow Motion
00:30
Brown Bear 128 missing a Sockeye Salmon at Brooks Falls - Slow Motion
00:20
Brown Bear 907 eating Sockeye Salmon in river.
Close-up Great Egret with open mouth
Monarch butterfly chrysalis on milkweed plant
Female Ruby-throated hummingbird in flight
Juvenile male ruby-throated hummingbird in flight
Juvenile male ruby-throated hummingbird with first red throat feather.
Female ruby-throated hummingbird in flight with mouth open
Juvenile male ruby-throated hummingbird in flight
Monarch Butterfly Caterpillars Eating Milkweed
00:16
Sockeye Salmon jumping Brooks Falls in Katmai National Park, Alaska - Slow Motion
00:26
Woman Receiving Radiation Therapy/ Radiotherapy Treatments for Cancer
Woman receiving Radiotherapy Treatments for cancer.
Sockeye Salmon jumping Brooks Falls in Katmai National Park, Alaska - Slow Motion
00:30
Man Receiving Medical Scan for Prostate Cancer Diagnosis
6 Inch Giant Prehistoric Megalodon Shark Tooth and 2 Inch Great White Shark Tooth
Costa Rican Jumping Viper flicking tongue in slow motion
00:20
Young alligator resting on a log
00:30
Great Egret in wetland swamp
Female and male Red-shouldered hawk calling to each other.
00:40
Large male American Alligator crossing path during breeding season
Rows of Colorful Medical Records - Patient Charts
Red-eyed Tree Frog in Rainforest
The fangs of a venomous bush viper snake
Woman Receiving Radiation Therapy Treatments for Cancer
Now extinct Pinta Island tortoise - Lonesome George taken in 2008
Woman Receiving Radiation Therapy Treatments for Breast Cancer
Brown Bears at Brooks Falls in Katmai National Park, Alaska
Brown Bear #854 Divot catches a sockeye salmon at Brooks Falls in Alaska - Slow Motion
00:50
Sockeye Salmon Jumping Brooks Falls Waterfall In Katmai National Park, Alaska- Slow Motion
01:00
Brown Bear diving for Sockeye Salmon at Brooks Falls in Katmai National Park Alaska - Slow Motion
00:41
Male & female cardinals at bird feeder in the snow - Slow Motion
01:00
Young girl holding a large Megalodon shark tooth
Two Starlings eating from bird feeder seed in the snow - Slow Motion
00:59
Monarch Butterfly Chrysalis with Morning Dew - Slow Motion
00:30
Large female Grizzly Bear with Spring cub next to cabin
2 Monarch Butterfly Chrysalises after a gentle rain.
Monarch Butterfly Chrysalis after a gentle rain.
Curious Red-eyed Tree Frog in Rainforest
Woman Receiving a Medical Scan for Breast Cancer
Man Receiving Electron Radiation (Radiotherapy) for Cancer Treatment
Colorful monarch butterfly caterpillars eating milkweed plants
00:29
Woman Receiving Radiation Therapy/ Radiotherapy Treatments for Thoracic Cancer
Brown Bear catching Sockeye Salmon at Brooks Falls - Slow Motion
00:20
Sockeye Salmon Jumping Brooks Falls Waterfall In Katmai National Park, Alaska- Slow Motion
00:44
Young raccoon foraging for food
00:18
Male Scarlet-rumped Tanager in Rainforest
Poison Ivy vines growing up a tree
17 year periodical cicada on plant
Female and Male 13 year periodical cicadas
Extreme closeup of a female Bush Viper (Atheris Squamigera)
Tiny Spring Peeper Froglet amphibian on plant
Amazon Leaf Frog / Fringe Tree Frog (Cruziohyla craspedopus) in Fruit Tree
00:23
2 Monarch Butterfly Chrysalises after a gentle rain.
00:25
Female Black Widow Spider
Authentic Ohio Dovetail Indian Arrowhead on White Background
Two Modern Bull Shark Teeth (Regular and Pathological)
Girl with fluted clovis arrowhead
Black Swallowtail Butterfly Cocoon - Brown Version
Beautiful young hunter girl looking through binoculars
2 American Alligators in swamp
Black Swallowtail Butterfly moving and twitching inside cocoon
00:14
Male Brown Bear 907 standing in Brooks River, Alaska