Marsa Alam and the Deep South (Elphinstone Reef, Daedalus Reef) are best for advanced divers, known for sharks, manta rays, and dramatic drop-offs. Hurghada and El Gouna are best for beginner-to-intermediate divers thanks to easy reef access and a wide choice of dive centers. Sharm El Sheikh and Dahab are popular for a mix of reef and wreck diving, including the well-known SS Thistlegorm.