content: " then what can i do ? " asked the distressed man . " you had better go down to ryn gu and tell ryn jin , the dragon king of the sea , what your trouble is and ask him to find the hook for you . i think that would be the best way . " " your idea is a splendid one , " said the happy hunter , " but i fear i can not get to the sea king 's realm , for i have always heard that it is situated at the bottom of the sea . " the younger princess left her sister to take charge of the happy hunter , and going faster than they , she reached the sea king 's palace first , and running quickly to her father 's room , she told him of all that had happened to them at the gate , and that her sister was even now bringing the augustness to him . the dragon king of the sea was much surprised at the news , for it was but seldom , perhaps only once in several hundred years , that the sea king 's palace was visited by mortals . 
answer: it was very difficult to reach .
question: why was it seldom that the sea king's palace was visited by mortals ?
target: why was it seldom that the sea king's palace was visited by mortals ?
references: why was it seldom that the sea king's palace was visited by mortals ?