The crossword solutions for the term SEASHORE FLIERS are ERNS (4 letters) and ERNES (5 letters). ERNS stands for a type of seabird, the ern, which is a medium-sized bird that lives in coastal areas. ERNES stands for a type of seabird, the ernes, which is a larger species of seabird that is found in the same coastal areas as the ern. Both species of seabird are known for their ability to fly close to the surface of the water, making them popular among beachgoers.