A deep-sea fish called the searobin has been spotted moving in unusual ways on the ocean floor, according to a recent study. This fish, which can grow up to 10 inches in length, uses its large pectoral fins to walk across the muddy and sandy seabed. Unlike most fish that walk on the seafloor—typically moving forward—the searobin has been observed moving sideways and even backward. The discovery was made in the South China Sea, where researchers captured footage of the fish using quick, jerky movements similar to those of shrimp, along with tail-driven swimming, to navigate its environment. The searobin, often described as a "fish-prawn hybrid" due to its unique appearance, was first documented in 1872 by the German-British zoologist Albert Günther. However, its ability to walk in multiple directions had never been recorded before. The study, published in the journal Ocean-Land-Atmosphere Research, was conducted by researchers who used deep-sea vehicles to film marine life in three different areas of the northern South China Sea. This allowed scientists to observe the searobin’s behavior in its natural habitat and document its unique locomotion. One of the searobin’s most distinctive features is its whisker-like barbels, which extend from its face and help it sense prey hidden in the sediment or dig through the seafloor for food. Its pectoral fins have evolved into flat, round plates, providing stability as it walks and swims. Additionally, the fish’s shrimp-like fin rays and tail allow it to make quick, explosive movements when threatened, similar to the way shrimp leap away from danger. The study highlights how deep-sea creatures can develop highly specialized adaptations to survive in extreme environments. Researchers believe this discovery may change how scientists view the diversity and complexity of life in the deep ocean. By understanding how the searobin has evolved such unique movement capabilities, scientists hope to gain new insights into the biological innovations that arise in some of Earth’s most challenging habitats.