If your idea of a fantastic vacation means being by the water, head to Aoshima Island. Whatever you choose to do here, you're unlikely to get bored of those lovely views.
Obama, where Aoshima Island is located, is bursting with things to see and do. Many travelers also stop by Wakasa Fisherman's Wharf, which isn't too far from the water-surrounded land mass. Check it out before you leave the area.