"A whale watch!" Rafi exclaimed as he and his friends came out the front door of the school. The announcement about the field trip had been made during their last period biology class. "What a cool field trip! I've always wanted to go on a whale watch. What do you think, Andi?" he asked, turning to his twin sister. "Isn't this going to be a total blast?" Andrea didn't have the heart to dampen her twin's enthusiasm by telling him what she really thought about the trip. "Sure, Rafi, it'll be great," she replied, trying to sound thrilled about the idea of a boat trip out on the ocean. Secretly Andi felt a sinking sensation in