Jack and Annie kept swimming to the reef, with calm.
Suddenly, Jack found the hammerhead shark was coming to them.
Jack surprised but didn't talk to Annie to keep the calm staus of them.
But the distance from the mini-sub to shore was too far than they thought.
So they floated to the ocean with great tiredness.
Then something touched their back from the ocean.
Jack thought it must be the shard and waited.
At the moment, he opened his eyes and saw the dolphins.
Annie already grabbed the Sukie's fin and yelling.
Jack also grabbed Sam's fin and felt happy.
At the shore, Annie stepped on something in the sand.
It's a shell, and its surface was rough and gray.
Then Jack found a picture of it.
The picture said it was oyster, and it had a pearl in the shell.
Finally, they found the answer to the riddle.
They came back to the treehouse, and the scroll had disappeared and made magical words on it.
Then they made a wish to go back home.
The time didn't have passed yet.
They will keep finding the answers to the riddles tomorrow and the next day until they become magical librarians.
