Fish That Walk Across Mud Are Redefining Life Between Land and Sea

When most people think of fish, they imagine creatures that spend their entire lives underwater. After all, fish rely on gills to breathe and fins to swim. Yet a small group of remarkable species breaks nearly every rule. Known as mudskippers , these extraordinary fish regularly leave the water, walking, hopping and even climbing across muddy shores. They spend hours on land searching for food, defending their territory and attracting mates before returning to the water. Their unusual lifestyle has fascinated scientists for decades because it offers a rare glimpse into how some of Earth's earliest vertebrates may have first ventured from water onto land millions of years ago.