Childrens - Middle Grade
 
Talise knows more about the ocean than any kid in Topsea. Any adult, too. As the best-and only-bathymetrist in Topsea, Talise is able to predict important things about the sea, like the next tide (Severely Low with a threat of Wildcard) or the arrival of Seaweed Season. What she can't predict, however, are her classmates' behaviors. Sometimes it's as if they're speaking different languages.

When Talise discovers a mysterious message in a bottle, her classmates believe it must have been sent by someone stranded on a deserted island. (Not to be confused with a dessert island.) But Talise is convinced the message is meant for her. And it's telling her to build a boat.

Everyone seems to think Talise is just being silly. Even Talise isn't exactly sure why she has to build the boat. And who keeps sending those strange messages in a bottle, anyway? All Talise knows is that she'd better finish building her boat fast, because an Extremely High Tide is coming?