Marbled Trout in Rocky Stream

A marbled trout swims through clear, shallow water over a rocky riverbed, illuminated by natural sunlight filtering from above.

A photograph of a marbled trout swimming over white riverbed pebbles in the Soča river, emerald water, rippling overhead sunlight See more

#Fish of River and Reef

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A brown trout swims in clear turquoise water above a pale, calcite-crusted sunken log, with sunlight creating rippling patterns on the sandy lake bottom.

A grayling fish with a prominent, colorful dorsal fin swims through clear, shallow water over a rocky riverbed with aquatic plants, illuminated by sunlight filtering from above.

A northern pike swims underwater beneath lily pads in a lake, with shafts of sunlight filtering through the surface.

A great white shark swims over a pale, rippled sandy seabed in clear, shallow water, with sunlight creating caustic patterns on its body and the ocean floor.

A split-level view of a brook in autumn, showing floating maple leaves on the surface and a brook trout swimming over amber-colored stones underwater, illuminated by a shaft of sunlight.

A split-view image shows the life cycle of Atlantic salmon in a river, with orange eggs and young fish among gravel underwater and a mature salmon leaping over a waterfall above, all illuminated by the golden light of dawn.

A whale shark swims with its mouth open through a cloud of pale snapper spawn in the deep blue water off Gladden Spit, Belize.

A grey reef shark swims side-on over a white sandy seafloor in clear, shallow turquoise water with sunlight patterns reflecting on its body.

An alligator snapping turtle rests on the sandy bottom of a clear river, illuminated by sunbeams filtering through the water with aquatic vegetation in the background.

A great white shark swims through kelp-filled, sunlit green water with its body curved in a banking turn.

A split-level view of a clear river in summer, showing the gravel bed and aquatic plants underwater with two fish swimming, and a tree-lined bank above the water surface.

A white-throated dipper walks along the pebbled riverbed underwater, with silver air bubbles clinging to its dark feathers as sunlight ripples through the clear water above.

A large brown grouper with its mouth wide open at a coral reef cleaning station, with two small cleaner wrasse inside its mouth and sun rays filtering through the water.

Sunlight creates caustic patterns on submerged green and grey pebbles in a river, with air bubbles clinging to the stones and a clear, emerald-toned open space to the right.

A whale shark swims past a vibrant coral pinnacle in the Andaman Sea, surrounded by a school of small fish under sunlit water.

A tiger shark is silhouetted against the bright sunlit surface of the ocean, with light rays filtering down through the water.

An anaconda rests on the white sandy bottom of a clear river, surrounded by aquatic plants and illuminated by sunlight creating rippling caustics.

A shark swims through a dense bait ball of small silver fish beneath the ocean surface, with sun rays filtering down from above.

A massive Leedsichthys swims through deep teal water, illuminated by shafts of sunlight filtering from above, surrounded by a cloud of golden plankton.

A whale shark swims upward toward the sunlit surface of the ocean, surrounded by small fish and illuminated by shafts of light.

A brown trout swims through clear water surrounded by white water-crowfoot flowers over a gravel riverbed, with sunlight creating rippling caustics on its body.

A brown trout swims in the clear, shallow water of a stream, surrounded by green aquatic plants and illuminated by dappled sunlight.

A tiger shark swims through shallow, clear turquoise water over a white sandy seafloor with dappled sunlight patterns visible on its body.

A nurse shark rests on the white sandy bottom of shallow, clear water, with sunlight creating rippling patterns across its body and the seabed.

A leopard shark rests on a sandy seabed with dappled sunlight filtering through the shallow water, surrounded by a small school of fish near a rocky reef.

A Bengal tiger swims through a clear, jade-colored river, viewed from directly above, with its body and stripes visible beneath the rippling water and sunlight.

A Caribbean reef shark swims through clear, shallow turquoise water over a bright white sandbank, casting a sharp shadow on the rippled sandy bottom.

A school of golden dourado fish swims over a pale sandy riverbed surrounded by lush green aquatic plants in the clear, sunlit waters of the Rio da Prata near Bonito.

An archerfish shoots a stream of water at an insect perched on a leaf above the water surface in a mangrove forest, captured in a split-level shot.

A lemon shark swims through shallow, clear water over a sandy bottom in a coastal setting with rocky cliffs in the background.

A leopard shark with dark spots and bands swims over a sandy seafloor in shallow, sunlit green water.

A woman in a black wetsuit and diving mask swims alongside a large whale shark in clear, sunlit tropical water filled with floating particles.

A zebra shark with distinct black and yellow stripes rests on dark volcanic sand at night, illuminated by a single light source.

A close-up underwater view of green aquatic plants covered in oxygen bubbles, with sunlight filtering through the water onto a gravel riverbed.

A close-up view of a tarpon's eye and silver scales in a mangrove channel, illuminated by golden light at dusk.

A great white shark swims through a dense school of silver baitfish in green ocean water with sunlight rays filtering from the surface.

A great white shark swims through deep blue water with sunlight filtering down from the surface.

A Murray cod swims beneath a submerged tree branch in a clear river, illuminated by shafts of sunlight filtering through the water.

A whale shark swims near the surface of green water with its mouth open to feed, illuminated by sunlight filtering from the upper left.

A large, dark-scaled fish swims through a sunlit kelp forest with light rays filtering down from the surface.

Five Atlantic salmon swim in a clear, turquoise pool of the Bonaventure River, casting distinct shadows on the golden, stone-covered riverbed under bright midday sun.

A vibrant red sockeye salmon leaps through the air over a rushing waterfall, surrounded by splashing water droplets against a backdrop of dark, wet rocks.

A tiger shark swims over a shallow seagrass bed in clear blue water, illuminated by soft sunlight from the right.

A basking shark swims with its mouth open in green, sunlit water, viewed from below with light rays filtering through the surface.

A whale shark surfaces at night near a boat, its spotted head illuminated by bright spotlights while plankton swirls in the water.

An American crocodile swims head-on toward the camera through clear, sunlit mangrove waters with visible roots in the background.

A great barracuda swims above a coral reef pinnacle covered in orange sponges, with sun rays piercing through the deep blue water.

A Chinese giant salamander with mottled brown skin rests on the rocky bed of a clear mountain stream, illuminated by sunlight filtering through the water.

A Galápagos shark swims over dark volcanic rock formations in clear blue water, with shafts of sunlight filtering down from the surface to illuminate its body.

An underwater view of a Posidonia seagrass meadow with long green blades growing on a sandy seabed, illuminated by sunlight rippling through the clear water.

A southern stingray swims over a shallow, rippled white sand seabed illuminated by bright sunlight creating caustic patterns.

A whale shark swims through shallow, clear turquoise water over a white sandy seabed, viewed from directly above.

A large, dense shoal of silver fish swims through clear blue ocean water, illuminated by bright sunbeams filtering down from the surface onto a sandy seabed.

A lemon shark rests on the white sandy bottom of a lagoon next to a coral formation, illuminated by soft morning light filtering through the water.

A northern pike swims through clear, sunlit water above a bed of aquatic plants next to a submerged log.

A northern pike swims underwater beneath lily pads in a lake, with shafts of sunlight filtering through the water.

A large potato cod with dark spots on its grey body swims over a vibrant coral reef in clear blue water, with sun rays filtering down from the surface.

A dusky grouper swims above a lush seagrass meadow in clear blue water, illuminated by bright shafts of sunlight from above.

A large tarpon swims through a dense school of silversides inside a dark limestone grotto, illuminated by dramatic sun shafts piercing through openings in the ceiling.

A bowmouth guitarfish swims over a white sandy seabed in clear, shallow water with sunlight creating ripple patterns on its back and the sand.

A whale shark with its mouth open swims through deep blue, sunlit ocean water with several remoras attached to its body.

A pig-nosed turtle swims through clear, shallow water over a sandy riverbed, with sunlight creating dappled patterns on its shell and the bottom.

A basking shark swims with its massive mouth wide open near the water's surface, illuminated by shafts of sunlight filtering through the green ocean.

A large whale shark swims near the surface of clear blue water, surrounded by small fish, with sunlight creating caustic patterns on its spotted back.

A tiger shark swims over a sandy, coral-strewn seabed, illuminated by shafts of sunlight filtering through the clear blue water from the upper left.

A large, dense shoal of small silver fish swims through dark ocean water, illuminated by bright sunlight filtering down from the surface.

A Caribbean reef shark glides horizontally over a sandy seabed covered in turtle grass, illuminated by rippled sunlight in clear, shallow blue water.

A blacktip reef shark swims just below the water's surface, silhouetted against the bright light of the moon shining through the water from above.

A sawfish swims over a seagrass bed in shallow, sunlit water with light rays filtering down from the surface.

A yellow Labrador retriever swims underwater in clear, shallow water, diving nose-first toward a pebble on the rocky bottom as sunlight filters down from the surface.

A large goliath grouper swims in front of a rusted shipwreck underwater, surrounded by a school of small silver fish under sun rays filtering from the surface.

A close-up view of a whale shark's eye and head, featuring its characteristic pale spots on grey skin, swimming through clear blue water with sunlight rippling across its surface.