Swim is a decentralized finance (DeFi) protocol that aims to bridge the gap between various blockchain networks, with a focus on Solana. It provides a seamless way to transfer tokens across chains using multi-token liquidity pools and Solana's Wormhole technology. Swim's unique approach to bridge design, called cross-chain stableswap, simplifies the bridging process and offers users the benefits of speed and decentralization. The protocol serves as a fundamental building block in the multi-chain DeFi ecosystem.