With beach weddings [1], there are several routes you can take to play up the theme. Mermaid details [2], classic nautical decor, or island vibes [3] are just a few suggestions to start, but what about seahorses? The majestic-looking creatures can be incorporated into weddings elegantly and without looking too childish or tacky. From cakes to guest favors, see 30 ideas we've gathered from Pinterest ahead.