Fish
Bizarre Sex Helped Anglerfish Diversify and Dominate the Deep Sea, Study Suggests
Some of these fish perform obligate parasitism, in which males attach to—and then fuse bodies with—the much-larger females
Between Dives, Orcas Take Only a Single Breath
A new study finds the black-and-white marine mammals tend to make shorter, shallower dives compared to humpback and blue whales, making orcas the "sprinters" of the ocean
Eerie Lampreys Hint at the Origins of Our 'Fight-or-Flight' Response and Sympathetic Nervous System
The jawless, parasitic fish largely haven't changed over the last 340 million years, but they might be better sources for studying our own evolution than thought, a recent study suggests
Beachcombers Discover Rare, Deep-Sea Anglerfish Washed Up on Oregon Coast
Most humans will never see a Pacific footballfish, as the creatures live at depths of 2,000 to 3,300 feet below the ocean's surface
Roman-Era Ship Was Carrying Jugs Full of Fish Sauce When It Sank 1,700 Years Ago
Discovered in the summer of 2019, the Ses Fontanelles wreck likely ran aground sometime during the fourth century
Move Over, Cicadas: These Living Things ‘Go Dark’ For a Long Time, Too
From frogs to orchids, many organisms go dormant or move underground for lengthy stints
These Massive, Extinct Salmon Had Spiky Teeth Like a Warthog's Tusks
For decades, scientists thought the teeth pointed downward, similar to those of a saber-toothed cat, but now they believe the fish's chompers jutted out sideways
Paleontologists Unravel Secrets of 'Enigmatic' 33-Foot Prehistoric Shark After Fossil Discovery
Scientists didn't know much about Ptychodus, an ancient shark genus, because its remains were usually just fragments. Now, complete fossils reveal its body shape and hunting habits
Journey Under the Sea With 15 Amazing Photos of Marine Life
These Smithsonian Magazine Photo Contest images feature the captivating creatures that live beneath the waves
You Can Help Migrating Fish Traverse a Dutch Canal By Ringing This Digital 'Doorbell'
The live stream from the Netherlands, which lets viewers notify a boat lock operator when fish need to be let through, has become a popular pastime for people around the world
77,000 Young Salmon Were Dumped Into the Wrong Creek After a Truck Crashed in Oregon
The spring Chinook salmon smolts should still be able to find their way to the Pacific Ocean and help boost the threatened population of the fish, officials say, though another 25,000 salmon died in the accident
Florida Fish Are Mysteriously Dying After 'Spinning and Whirling,' and Scientists Can't Explain It
The abnormal behavior has raised special concerns about the endangered smalltooth sawfish, an odd-looking ray with chainsaw-like teeth, as 28 of them have died
Ten Wild Facts About Octopuses: They Have Three Hearts, Big Brains and Blue Blood
These bizarre creatures have been around for hundreds of millions of years, and for humans, they’ve inspired horror, admiration and culinary prestige
Hundreds of Thousands of Salmon Die After Release in Northern California's Klamath River
The juvenile Chinook salmon likely died from pressure changes as they swam through an old tunnel in the Iron Gate Dam, slated to be removed this year as part of a massive demolition project
Single Orca Spotted Killing a Great White Shark for the First Time Ever
In less than two minutes, the marine mammal attacked a juvenile white shark and ripped out its liver in an encounter off the coast of South Africa last year
The World's Smallest Vertebrate Is a Tiny Brazilian Frog, Study Finds
Adult male Brazilian flea toads are just over 7 millimeters long on average, and females measure about 8.15 millimeters
This Tiny Fish Can Make Sounds That Rival an Airplane or an Elephant—Now, Scientists Know How
Transparent and just half an inch long, male Danionella cerebrum can make noises of more than 140 decibels
See 15 Otherworldly Images From the Underwater Photographer of the Year Awards
A hunting monkey, 'kissing' scorpionfish and playful dolphins feature in just a few of the 130 striking photographs distinguished with honors in the competition
A Female Stingray That Hasn't Had a Mate in Eight Years Is Mysteriously Pregnant. Is a Shark the Father?
Though the round stingray, named Charlotte, shares her aquarium tank with two male sharks, experts say it is impossible for a shark to impregnate a ray
Earth’s Migratory Animals Are in Peril, According to U.N. Report
The Convention on Migratory Species warns that many birds, mammals and fish face numerous threats, but they can be saved
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