Our foam stress toys aquatic animals category is full of fun squishy stress relief marine animals. You will find tons of squishy fish, shark stress balls and squeeze penguins. These polyurethane aquatic animal toys come in a wide variety of shapes and styles. Foam stress toys are an affordable way to add some color and personality to your desktop. With so many different shapes, you're sure to find one that is just right for you or to give as a gift.