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Fish

The Earth in the Mesozoic Era, when dinosaurs roamed the planet, looked much unlike how it does today—even beyond presence of creatures like Giganotosaurus.

Five Ways the World of the Dinosaurs Looked Different From Ours, Beyond the Presence of the ‘Terrible Lizards’

Earth has changed dramatically since the Age of Dinosaurs, from its climate to geography and animal life

Dilivium, a sculpture by the French artist JR, spans roughly 230 feet across the Vatican Apostolic Library’s facade. 

Pope Leo XIV Makes a Splash for His 71st Birthday, Announcing a Water-Themed Art Exhibition at the Vatican Library

Contemporary sculptures, fish made from typographic elements, centuries-old treatises and historical global cookbooks will feature in the new ‘Catastrophe and Wonder’ art show

Lake sturgeon—massive and long-living fish in the Great Lakes—may survive to much older ages than scientists previously thought, according to a recent study. Here, a juvenile lake sturgeon is captured during a fisheries assessment in the St. Clair-Detroit River System.

Some Fish in the Great Lakes Might Be More Than 400 Years Old, a Study Suggests, Outliving Around 15 Generations of Humans

Lake sturgeon may be among the longest-living vertebrates, second only to Greenland sharks, according to recent research. However, scientists note that follow-up work is necessary to clarify the species’ life span

This photo of an adult male seahorse with two juveniles earned Julien Anton the overall Ocean Photographer of the Year award and first place in the wildlife category.

See Nine Stunning Images from This Year’s Ocean Photographer of the Year Contest That Show the Majesty of Marine Life

From seahorse farewells to saving a stranded whale, the photos capture the diversity and beauty of sea creatures—but also the perils they face

Researchers spotted invasive devil firefish swimming around the wreck.

This Hospital Ship Sank Off Albania’s Coast During World War II. Now, It’s Teeming With Marine Life

A new survey of the “Po” has revealed a thriving underwater ecosystem, including rare Mediterranean monk seals

A hawksbill sea turtle munches away on a sponge near Juno Beach.

Smithsonian Photo Contest Galleries

Journey Under the Sea With 20 Amazing Photos of Marine Life, From Seahorses to Manta Rays to Orcas to Turtles

These Smithsonian Magazine Photo Contest images feature the captivating creatures that live beneath the waves

Researchers have spent the past two years studying the interactions between common octopuses and blue crabs and perfecting breeding techniques.

Blue Crabs Have Taken Over the Adriatic Sea. To Fight Them Off, Italian Researchers Just Released Thousands of Baby Octopuses

Although prized in the United States, the crustaceans have been decimating ecosystems and the fishing industry in Italy. Experts hope that an army of natural predators—common octopuses—can help contain the invasive species’ spread

A photo of Solenostomus snuffleupagus taken in 2003

Meet the Newly Discovered Fuzzy Fish Species Named After Mr. Snuffleupagus From ‘Sesame Street’

The ghost pipefish’s scruffy appearance probably helps it look like floating algae, allowing it to blend in with its environment. Researchers had been on the hunt for this strange creature for years after first spotting one more than two decades ago

This might be the view a seal gets as it comes up from underwater to breathe: a polar bear, looking down for its prey.

See 16 Stunning Animal Images From the Wildlife Photographer of the Year Awards

Now in its 62nd year, the famed competition has released a sneak peek of the entries from this contest ahead of announcing the winners in October

An image of the reef

These Coral Reefs Off West Africa Were Long Presumed Dead. Scientists Just Found Them Alive and Teeming With Life

Fish surveys in the 1960s detected what experts thought was a dead coral reef barrier off the country of Benin. Decades later, researchers set off in small fishing boats to investigate it using sonar mapping, underwater drone surveys and stationary video recorders

A koala, Phascolarctos cinereus, with her babies at Australia Zoo Wildlife Hospital, 2011

This Amazing Archive of Animal Photography Reveals 18,000 Species and Counting. Here’s How Joel Sartore Built His ‘Photo Ark’

For 20 years, the National Geographic photographer has showcased Earth’s animals in a series of striking images that make even the tiniest creatures look immense

A blacktip shark, above, looks and behaves like a spinner shark. Scientists are tracking spinner sharks to get a clearer idea of the species' whereabouts.

These Shark Look-Alikes Have Long Confounded Fishers and Scientists on the East Coast. Tracking Where They Migrate Could Help Clear the Confusion

Researchers are tagging and tracking spinner sharks to map out their geographic distribution, because they’ve seen that the range of the very similar blacktip shark has shifted

A catfish with melanoma, a kind of skin cancer

A Strange, Never-Before-Seen Cancer Seems to Be Spreading Among Catfish in a New England Lake

More than a decade ago, fishers and biologists noticed jet-black tumors on the skin of brown bullhead catfish in Lake Memphremagog. Genetic testing hints that they are caused by the first contagious cancer ever documented in fish

A 52-foot-long model of a female Otodus megalodon is suspended from the ceiling at the Smithsonian National Museum of Natural History.

Predatory Sharks Grew to Enormous Sizes in Prehistoric Times. These Five Strategies Helped Them Get So Big

By cannibalizing their siblings in the womb or avoiding meat-eating pliosaurs, fearsome carnivores like the megalodon ballooned to proportions that would dwarf any shark alive today

The brown trout were likely introduced to guarantee a food source if reindeer hunts were unsuccessful, according to a new study.

Hunter-Gatherers Brought Trout to a Norwegian Mountain Lake 7,000 Years Ago, the Earliest Known Example of Humans Translocating Fish

Researchers have long known that the animals were introduced into the region’s high-altitude bodies of water, but they weren’t sure when it happened or whether humans had a hand. Analyses of recently discovered ancient fish traps provide new clues

A new study documents two incidents of orcas breaking sunfish into pieces.

Video Captures Orcas Ramming a Sunfish So Hard It Explodes. The Mysterious Behavior Might Be a Form of Play or Juvenile Care

In two incidents documented in Mexico’s Gulf of California, orcas worked together to blast sunfish into smithereens after they had killed the enormous animals

Two dolphins swim up to the camera. The recognized images from this year's Ocean Conservancy Photo Contest all feature animals.

These 11 Wildlife Images From the Ocean Conservancy’s Photography Contest Showcase the Wonder of Earth’s Waters

Seals, penguins and fish are featured in the nonprofit’s annual competition to inspire care for the world’s oceans

The researchers tracked eye and body movements of larval zebrafish.

Fish and Humans Share Surprisingly Similar Sleep Habits, Including Daytime Naps

A recent study suggests that zebrafish have four sleep substates, just like humans do—and one of them is akin to an afternoon snooze

The new species is covered in spots and dashes.

Scientists Discover a New Species of ‘Walking’ Shark in Papua New Guinea. They Suspect It’s at Risk of Going Extinct

The creature belongs to a unique group of sharks whose members can use their strong pectoral fins like legs to get around

A female blue crab with an acoustic telemetry tag on its shell. Scientists at the Smithsonian Environmental Research Center use telemetry tags to track the migration of blue crabs throughout the Chesapeake.

Young Blue Crabs Have Been Mysteriously Dwindling in the Chesapeake Bay for Years. This Winter, They Saw a Boost in Numbers. What’s Driving These Trends?

A recent report detailed a 50 percent drop in juvenile Chesapeake blue crabs since 2010. Then, a survey found a surprising surge in the young crustaceans this year

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