From turtle-dotted coral gardens in St. Anne Marine Park to hammerhead-patrolled drop-offs off North Island, Seychelles delivers a kaleidoscope of undersea thrills wrapped in postcard-perfect island scenery. Warm, crystal-clear waters averaging 27 °C (81 °F) year-round, dependable dive centers with eco-friendly practices, and a laid-back Creole vibe make this Indian Ocean nation a bucket-list destination for beginners and technical divers alike. This comprehensive guide shares firsthand insight into the best reefs, wrecks, and night-dive hotspots, explains seasonal conditions and marine migrations, outlines practical travel and accommodation advice, and highlights sustainable ways to explore—ensuring your Seychelles dive holiday is unforgettable and reef-safe.