What Is a Remora Fish on a Shark
A remora is a small fish that uses a specialized suction disc on its head to attach to larger marine animals, especially sharks. This remora fish on a shark relationship is a classic example of marine symbiosis, where both organisms gain advantages from close physical contact.
Why Remoras Attach to Sharks
Remoras gain transportation, protection, and access to leftover food scraps from the shark's meals. In return, remoras can remove parasites from the shark's skin and gills, providing a cleaning service that may improve the shark's overall health.
How the Remora Fish Stays Attached
The remora's dorsal fin has evolved into a flat, oval suction disc that clings firmly to the shark's skin. By adjusting the disc, the remora can attach, hold position, and release quickly without harming the shark.
Where Remoras and Sharks Are Found
Remoras are found in warm and tropical oceans worldwide, often seen attached to sharks, rays, and large bony fish. They commonly inhabit coastal waters, reefs, and open oceans where host species are abundant.
Learn more about remora behavior and shark interactions at National Geographic.
