Despite their size, blennies are real survivors.
Most blennies take up refuge in small holes in the ocean floor or in empty shells and bottles.
Large amounts of mucus cover the blenny's skin and protect it from the dangerous chemicals in the water. Some blennies that live in shallow rocky coastal areas are so rugged that they can live outside of the water for short periods of time. When the tide goes out, blennies can move from one pool of water to another by jumping along the dry land. Blennies have large eyes that dart around rapidly, taking in everything that is going on above them. The quick, jerky movement of their eyes, combined with their oversized heads give blennies a very expressive, almost comical set of facial features.