The Turtle Whose Snap Unfastened

Tort is the youngest turtle of Mr. & Mrs. Turtle. He refuses to learn to swim unlike his confident brother and twin sister, Boxes, Muddy & Puddy. One day, Tort goes on an adventure to a nearby island and riskily rides Mr. Salmon's tail to get there. When his mom, Mrs. Turtle, hears about this dangerous adventure she forbids Tort to ride a fish's tail again as they are notoriously untrustworthy and his inability to swim can put him a lot of danger. Tort defies his mom, a decision that has perilous consequences for him.