Like your symbol, the Fish, you love the seashore, so working out on the beach is ideal for you!
Running on sand burns nearly twice the calories as running on sidewalks because your feet and calves have to work harder to push off the constantly shifting surface, and your body has to stabilize itself as you move over the uneven surface.
And unlike pounding on pavement, running on sand is easier on your joints. Not a runner? Start with brisk walking and gradually build up your speed. Don't forget to stretch afterward!