OpenSea is a non-fungible token (NFT) marketplace that offers users the ability to buy, sell, create, and trade NFTs. It is the largest NFT trading platform, with more than 2.4 million active users and a daily trading volume of $6.03 million, as of November 2022. <br> <br>OpenSea prides itself as being the first and largest NFT platform providing essential NFT services. Before it was created in 2017, there was no platform for users to trade different NFTs easily. OpenSea was created as a solution to allow users to trade crypto collectibles and other NFTs with one another.