With calm waters and vibrant marine life, Blue Lagoon is the most accessible snorkeling spot for travelers based in south Bali. Pair it with perhaps Bali's most-Instagrammed sight, Lempuyang Temple's Gate of Heaven, on this fascinating east Bali tour, with lunch in a restaurant by the beach. If you book the inclusive package, you'll enjoy an instructor, jukung boat transfer to two separate spots, and essential gear as well.