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Mark Kostich

Two Brown Bear cubs in spruce tree with an immature bald eagle in the background at Brooks Falls in Katmai National Park, Alaska

Two and a half year old brown bear cub (128 junior) next to a six month old brown bear cub (806 junior).

Large Brown Bear standing in river

Brown bear in Brooks River with front paws on rock displaying very large front claws.

Brown bear cub 909jr facing river waters alone.

Female Osprey spreading her wings in nest

Juvenile Brown Bear with paw on tree

Juvenile Brown Bear with paws on tree in forest

Female brown bear 224 in forest at Brooks Falls, Alaska.

Two cute Brown Bear cubs in spruce tree at Brooks Falls in Katmai National Park, Alaska

Brown Bears 138 & 99 fighting for positioning in Brooks River, Alaska

Brown Bear cub 909 junior climbing a spruce tree at Brooks Falls in Katmai National Park, Alaska

Juvenile Bald Eagle defecating in spruce tree - Slow Motion

00:30

Alta definición

Brown Bear cub 909jr in spruce tree at Brooks Falls in Katmai National Park, Alaska

Slow motion clip of an menacing alligator swimming in reflective waters

00:30

Alta definición

Red-eyed Tree Frog in rainforest

Woman Receiving Radiation Therapy/ Radiotherapy Treatments for Cancer

Sockeye Salmon jumping Brooks Falls in Katmai National Park, Alaska - Slow Motion

00:26

Alta definición

Monarch butterfly chrysalis on milkweed plant

Sockeye Salmon Jumping Brooks Falls Waterfall In Katmai National Park, Alaska- Slow Motion

01:00

Alta definición

Sockeye Salmon jumping Brooks Falls in Katmai National Park, Alaska - Slow Motion

00:30

Alta definición

Red-eyed Tree Frog in Rainforest

Brown Bear catching Sockeye Salmon at Brooks Falls - Slow Motion

00:20

Alta definición

Rows of Colorful Medical Records - Patient Charts

Curious Red-eyed Tree Frog in Rainforest

The fangs of a venomous bush viper snake

Woman Receiving Radiation Therapy Treatments for Cancer

Woman Receiving Radiation Therapy/ Radiotherapy Treatments for Thoracic Cancer

Closeup of Brown Bear catching Sockeye Salmon at Brooks Falls - 4k Slow Motion

00:30

Alta definición

Menacing alligator swimming in water

00:40

Alta definición

Woman Receiving Radiation Therapy Treatments for Breast Cancer

Brown Bear (#128 Grazer) catching a sockeye salmon at Brooks Falls, Alaska - Slow Motion.

00:30

Alta definición

Man Receiving Medical Scan for Prostate Cancer Diagnosis

Man Receiving Electron Radiation (Radiotherapy) for Cancer Treatment

6 Inch Giant Prehistoric Megalodon Shark Tooth and 2 Inch Great White Shark Tooth

Brown Bears at Brooks Falls in Katmai National Park, Alaska

Immature bald eagle on white spruce tree

Mother Brown Bear 306 with spring cub at Brooks Falls in Alaska

Juvenile Sichuan Takin in field with open mouth

Juvenile Sichuan Takin in field with open mouth

Greater One Horned Indian Rhino eating grass in slow motion.

00:43

Alta definición

Two southern white rhinos preparing to mate

Male Père David's deer with grass on antlers during rutting season display.

Greater One Horned Indian Rhinoceros - Slow Motion

00:20

Alta definición

Two Indian Rhinos in lake

Greater One Horned Indian Rhinoceros grazing

3 Week old Persian Onager foal (Equus hemionus onager).

Green Anaconda Snake

Brown Bear Divot 854 with a Sockeye Salmon at Brooks Falls - Slow Motion - Part 3

00:30

Alta definición

Two Modern Bull Shark Teeth (Regular and Pathological)

Female Osprey building a nest

Man Receiving Electron Radiation Therapy for Skin Cancer

Modern Shark teeth (Lingual View); Tiger Shark, Great White Shark, Bull, Mako, Oceanic Whitetip

Monarch Butterfly Caterpillars Eating Milkweed

00:16

Alta definición

Reticulated Python Snake

Cute baby Sloth hanging from tree branch

Amazon Leaf Frog / Fringe Tree Frog (Cruziohyla craspedopus) in Fruit Tree

00:23

Alta definición

Cute juvenile American Alligator in Florida marsh

00:20

Alta definición

Gallinule swimming with open mouth

Two Brown Bears fighting in Brooks River, Alaska

A large Brown Bear stands on a overturned tree at Brooks River in Alaska

Florida turtle covered in duckweed - Slow Motion

00:25

Alta definición

Osprey bobbing head and looking at camera- Slow motion

00:36

Alta definición

Closeup image of a male Cuban Crocodile swimming in water

Limpkin bird carrying a freshwater clam

Limpkin bird wading in marshland

Osprey landing in nest of Spanish Moss

Native blue heron eating an invasive blue tilapia, as the mouth brooding fish expels her eggs.

Slow Motion Closeup of a Blue Heron

00:17

Alta definición

Sockeye Salmon jumping Brooks Falls in Katmai National Park, Alaska - Slow Motion

00:30

Alta definición

3 week old baby Indian rhinoceros

Brown Bear #854 Divot catches a sockeye salmon at Brooks Falls in Alaska - Slow Motion

00:50

Alta definición

Red-eyed Crocodile Skink in rainforest at night

Woman Receiving Radiation Therapy Treatments for Breast Cancer

Close-up of a venomous Bush Viper snake

Mother Brown Bear with cubs eating fish - Slow Motion

00:30

Alta definición

Monarch Caterpillars eating milkweed plant

00:21

Alta definición

Woman receiving Radiotherapy Treatments for cancer.

Woman Receiving a Medical Scan for Breast Cancer

Man Receiving Radiotherapy Treatments for Prostate Cancer

Brown Bear catching Sockeye Salmon at Brooks Falls - 4K Slow Motion

00:30

Alta definición

6 Inch Giant Prehistoric Megalodon Shark Tooth and 2 Inch Great White Shark Tooth

Closeup of a Harlequin Macaw

Four Grizzly Bear cubs playing together - Slow Motion

00:26

Alta definición

Brown Bear Divot 854 carrying a Sockeye Salmon at Brooks Falls - Slow Motion - Part 5

00:30

Alta definición

Brown Bear Divot 854 catching a Sockeye Salmon at Brooks Falls - Slow Motion - Part 2

00:30

Alta definición

Brown Bear Divot 854 missing a Sockeye Salmon at Brooks Falls - Slow Motion - Part 1

00:15

Alta definición

Two Brown Bears waiting for fish at Brooks Falls - Slow Motion

00:30

Alta definición

Brown Bear 128 missing a Sockeye Salmon at Brooks Falls - Slow Motion

00:20

Alta definición

Brown Bear 907 eating Sockeye Salmon in river.

Osprey and Belted Kingfisher birds in tree

00:16

Alta definición

Alligator floating in river with eyes above water

00:29

Alta definición

Slow motion clip of a large alligator on a river bank

00:30

Alta definición

Slow motion clip of an menacing alligator swimming in reflective waters

00:20

Alta definición

American Crocodile swimming in river