Baby sea stars may look innocent and adorable, but they're teensy little cannibals and eat their own siblings for their own survival.
At least 90 mysterious blobs of underwater jelly have been sighted near Norway and the Mediterranean Sea, and researchers finally know what they are.
A mysterious disease affecting young Californian black bears is causing them to become fearless when interacting with humans and is preventing them from developing properly.
An arachnologist described a new species of peacock spider after a citizen scientist discovered it in the wetlands of southern Australia.
Scientists propose that the circling could calibrate the animals' magnetic biosensors, in much the same way as submarines circle.
High-speed cameras and arrays of microphones helped researchers draw an acoustic map of hummingbirds' distinctive hum.
A well-preserved fossil reveals that 180 million years ago, an eight-armed predator suffocated with its prey.
Most predators are stymied by the cicadas' 17-year life spans, but the insects are still vulnerable to being zombified.
Scientists have finally solved a 25-year-old mystery surrounding a neurodegenerative disease killing bald eagles and other lake animals in the U.S.
Every few years, millions of by-the-wind sailor jellyfish wash up on beaches and die. What is causing so many of them to become stranded? The blob could be to blame.
A dead "river monster" from the Amazon was discovered in Florida, leading to concerns that the fish might become an invasive species there.
Primeval sea creatures share genes with humans, suggesting that we're more like ancient animals than previously thought.
A juvenile humpback whale has washed up on a beach in the U.K. after first being spotted dead weeks ago.