An ocean sensory bottle is so captivating and fun to play with! Create your own ocean in a bottle and watch the contents swirl and settle, just like waves at the beach. Explore 3 different types of ocean sensory bottles made with marine themed items like sand and seashells. These DIY discovery bottles are simple, versatile, and very inexpensive to make. And best of all they're great calming tools for reducing anxiety and improving concentration! This post contains affiliate links. If you use these links to buy something we may earn a small commission which helps us run this website.