OpenSea is a decentralized non-fungible token (NFT) marketplace for buying, selling, and trading NFTs. In fact, OpenSea brands itself as the biggest marketplace for digital goods. As such, it’s worth taking a closer look at OpenSea and what the platform adds to trading NFTs. Moreover, this article explains how to use OpenSea, as well as what NFTs are. The difference between fungible tokens and NFTs is that they have unique characteristics and identifiers and are not interchangeable. Another way to think of them is that NFTs represent things, not currencies.