What Happened to Seamus the Starfish?

Seamus the Starfish and his fish friends plan a picnic in the coral reef. When the day comes, they all meet near Seamus' rock...but Seamus is not there Join Caleb, Chloe, Eely, Maury, Opal, Sandy and Tara in search of their friend, who mysteriously does not show up for their fun day