public class Fish extends Animal {
    private double swimSpeed; // m/s

    public Fish(String name, double swimSpeed) {
        super(name);
        this.swimSpeed = swimSpeed;
    }

    public void swim() {
        System.out.println(getName() + " is swimming at " + swimSpeed + " m/s.");
    }

    public double getSwimSpeed() {
        return swimSpeed;
    }
}