Fish
How Barreleye Fish Rotate Their Eyes
Barreleye fish rotate tubular eyes inside a transparent head shield. Discover how this extraordinary arrangement helps them hunt in…
Filed in the Field Guide
Category: Fish
Fish
How Four-Eyed Fish See Air and Water
See how four-eyed fish divide two eyes between air and water, with specialized corneas, retinal regions and light-sensitive proteins.
Fish
The Fish With Legs That Can Taste the Seafloor
Learn about the unique marine creature that uses modified fins to walk across the ocean bottom and detect hidden…
Fish
The Fish That Has Almost Completely Transparent Blood
Discover the story of a unique Antarctic fish that evolved to live without red blood cells, thriving in icy…
Fish
The Squid That Eats the Ocean’s Falling Garbage
Learn how a fascinating deep-sea cephalopod thrives by consuming sinking organic debris instead of hunting prey.
Fish
Hagfish Slime Expands 10,000 Times in Under Half a Second
One pinch on the tail turns a bucket of seawater into a suffocating gel. The mechanism involves coiled protein…
Fish
Anglerfish Mating Ends With the Male Fused Permanently Into the Female
To merge two bodies into one, deep-sea anglerfish deleted the immune system every other vertebrate depends on. In a…
Fish
What Kills the Immortal Jellyfish?
Explore the science behind how this unique creature cheats death by aging backward and what dangers it still faces…
Fish
How Scientists Proved Dolphins Sleep With Half Their Brain Awake
Discover the definitive experiments and neurological findings that revealed how cetaceans manage to rest while remaining constantly active and…
Fish
The Fish That Changes Sex When the Group Needs It
Explore the incredible process of sex transformation in clownfish, a natural adaptation for survival within their rigid social structure.
Fish
The Octopus That Punches Fish When They Annoy It
Discover the scientific reasons why some octopuses resort to punching their fish hunting partners.
Fish
The Pufferfish Crop Circle Is the Ocean’s Weirdest Work of Art
Learn about the small, lovesick pufferfish that spends a week building a massive, intricate sand sculpture as part of…
Fish
The Fish That Hides Inside a Sea Cucumber’s Butt
Discover the unsettling and hilarious story of a fish that has evolved to live inside the rear end of…
Fish
Why the Slingjaw Wrasse Has a Built In Face Cannon
Explore the bizarre mechanics of a reef fish that launches its mouth forward to capture food.
Fish
The Archerfish That Shoots Bugs Out of the Air With Water
This small fish has evolved to become a natural sharpshooter, using weaponized water to hunt prey with unsettling accuracy.
Fish
The Parrotfish That Sleeps Inside a Bubble of Its Own Slime
This colorful reef fish has a truly disgusting nightly habit that is essential for its survival.
Fish
The Fish That Uses Electricity Like a Sixth Sense
Learn about the unsettlingly clever fish that have evolved to weaponize electricity, using it as a sixth sense to…
Fish
The Deep Sea Hunter That Uses Red Light No One Else Can See
Discover a strange deep-sea fish that hunts with a secret red headlight invisible to its prey.
Fish
The Fish That Can Walk Across Mud Like It Owns the Place
Learn about the deeply unnatural fish that decided gills were optional and walking on mud was its birthright.
Fish
The Fish That Can Breathe Through Its Gut
Learn about the unsettling yet ingenious evolutionary hack that allows some aquatic creatures to use their digestive system as…
Fish
This Fish Climbs Waterfalls Using Its Mouth
Learn about the unsettling Hawaiian fish that defies gravity by scaling massive waterfalls with its specialized sucker-like face.