Off the coast of Tanzania, where the turquoise Indian Ocean laps gently against coral sands, Zanzibar unfolds as one of the most captivating underwater worlds in East Africa. Its waters shimmer with endless shades of blue — from the pale aquamarine shallows near the shore to the deep sapphire tones of the open sea. Beneath this surface lies a marine wonderland that draws adventurers, dreamers, and divers from across the globe.