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Mark Kostich

Cute juvenile American Alligator in Florida marsh
00:20
Sockeye Salmon jumping Brooks Falls in Katmai National Park, Alaska - Slow Motion
00:26
Woman Receiving Radiation Therapy/ Radiotherapy Treatments for Cancer
Menacing alligator swimming in water
00:40
Woman receiving Radiotherapy Treatments for cancer.
Sockeye Salmon jumping Brooks Falls in Katmai National Park, Alaska - Slow Motion
00:30
Closeup image of a male Cuban Crocodile swimming in water
Osprey bobbing head and looking at camera- Slow motion
00:36
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
Monarch butterfly chrysalis on milkweed plant
Man Receiving Medical Scan for Prostate Cancer Diagnosis
Gallinule swimming with open mouth
Rows of Colorful Medical Records - Patient Charts
The fangs of a venomous bush viper snake
Red-eyed Tree Frog in Rainforest
Woman Receiving Radiation Therapy Treatments for Breast Cancer
Monarch Butterfly Caterpillars Eating Milkweed
00:16
Woman Receiving Radiation Therapy Treatments for Cancer
6 Inch Giant Prehistoric Megalodon Shark Tooth and 2 Inch Great White Shark Tooth
Curious Red-eyed Tree Frog in Rainforest
Now extinct Pinta Island tortoise - Lonesome George taken in 2008
Woman Receiving Radiation Therapy/ Radiotherapy Treatments for Thoracic Cancer
A juvenile male Ruby-throated Hummingbird drinking from feeder, flashing his one red throat feather - Slow Motion
00:17
Young girl holding a large Megalodon shark tooth
Man Receiving Electron Radiation (Radiotherapy) for Cancer Treatment
Brown Bear catching Sockeye Salmon at Brooks Falls - Slow Motion
00:20
Brown Bears at Brooks Falls in Katmai National Park, Alaska
Sockeye Salmon Jumping Brooks Falls Waterfall In Katmai National Park, Alaska- Slow Motion
01:00
Amazon Leaf Frog / Fringe Tree Frog (Cruziohyla craspedopus) in Fruit Tree
00:23
Close-up of a venomous Bush Viper snake
Sockeye Salmon Jumping Brooks Falls Waterfall In Katmai National Park, Alaska- Slow Motion
00:44
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
Sockeye Salmon jumping Brooks Falls in Katmai National Park, Alaska - Slow Motion
00:30
3 week old baby Indian rhinoceros
Slow Motion Closeup of a Blue Heron
00:17
Limpkin bird carrying a freshwater clam
Limpkin bird wading in marshland
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.
Poison Ivy vines growing up a tree
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
Brown Bear 907 eating Sockeye Salmon in river.
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
Close-up Great Egret with open mouth
Authentic Ohio Dovetail Indian Arrowhead on White Background
Girl with fluted clovis arrowhead
Woman Receiving a Medical Scan for Breast Cancer
Reticulated Python Snake
17 year periodical cicada on plant
Monarch butterfly chrysalis on wilted milkweed plant
Close-up of a venomous Bush Viper snake with open mouth
Brown Bear showing paw at Brooks Falls in Alaska
Extreme closeup of a female Bush Viper (Atheris Squamigera)
Modern Shark teeth (Lingual View); Tiger Shark, Great White Shark, Bull, Mako, Oceanic Whitetip
Brown Bear catches Sockeye Salmon after 3 attempts at Brooks Falls in Katmai National Park Alaska - Slow Motion,
00:30
Rows of Colorful Medical Records - Patient Charts
Tiny Spring Peeper Froglet amphibian on 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
Female Black Widow Spider
Closeup of Brown Bear catching Sockeye Salmon at Brooks Falls - 4k Slow Motion
00:30
Close up of a large Green Anaconda snake
Venomous Cottonmouth / Water Moccasin (Agkistrodon piscivorus)
Venomous Bush Viper Snake (Atheris squamigera) showing fangs - Rare Black Color
Two Modern Bull Shark Teeth (Regular and Pathological)
Cute baby Sloth hanging from tree branch
Woman Receiving Radiation Therapy/ Radiotherapy Treatments for Cancer
Woman Receiving Radiation Therapy Treatments for Brain Tumor (Cancer)
Front and Back (Obverse & Reverse) of a 1938 Indian Head Uncirculated (Buffalo) Nickel
Brown Bear #854 Divot catches a sockeye salmon at Brooks Falls in Alaska - Slow Motion
00:50
Strawberry Poison-dart Frog in rainforest
Black Widow Spider Family - Female, Male, Egg sac
Man Receiving Electron Radiation Therapy for Skin Cancer
Close-up of a venomous Bush Viper snake with forked tongue
Woman Receiving Radiation Therapy Treatments for Breast Cancer
Prehistoric Megalodon Shark Tooth and two Great White Shark Teeth