The mermaid and the shark (nalu&gale fanfic)

Lucy and levy get captured by the sharks! Natsu and gajeel but something goes very wrong, natsu decides to free lucy but have her handcuffed to him
Gajeel does the same
But once the leader of the sharks finds out lucy and levy become endanger and have no where else to turn to
Natsu and gajeel get locked up, they hear the girls screams and try everything they got and say how they feel but will they get there in time to save them? Or will they be to late to even tell them how they feel.